উইকিপিডিয়ার লাইসেন্স অনুযায়ী কোন পাতার তথ্য তৈরী বা পরিবর্তন করার সময় সকল ব্যবহারকারীর অবদান স্বীকার করতে হবে। উইকিপিডিয়ার  পাতার ইতিহাস সুবিধাটি ব্যবহার করে সকল ব্যবহারকারীর সম্পাদনা দেখা যায়। কিন্তু ঠিক কোথা থেকে এই সম্পাদনা এসেছে বা উৎস তা পরিষ্কার হয় না, বিশেষ করে অনুবাদের ক্ষেত্রে। এই কারনে উইকিপিডিয়ার অন্য পাতা থেকে লেখা, তথ্য, অন্য কোন বিষয়াদি কপি করলে তা সম্পূরক অবদান হিসেবে উল্লেখ করা প্রয়োজন। এটা দ্বারা বুঝায় কমপক্ষে অনূদিত পাতার সম্পাদনা সারাংশে (অর্থাৎ যে পাতায় লেখা কপি করা হয়েছে) উৎস পাতার  লিংক দেয়া আবশ্যক যেমন, কপি করা হয়েছে [[পাতার নাম]]; অবদানের জন্য ঐ পাতার ইতিহাস দেখুন. হুবহু কপি বা অতি মাত্রার কপি হলে উৎস পাতায়ও একটি টীকা যোগ করা ভাল অভ্যাস বলে পরিগনিত হবে। ব্যবহারকারীরা আলাপ পাতায় একই ভাবে উৎসের অবদান সংক্রান্ত তথ্য যোগ করতে পারেন। বিষয়বস্তু পুনব্যবহারকারীরা এটি উভয় পাতায় (উৎস ও অনূদিত পাতা) করতে পারেন।  উইকিমিডিয়ার অন্যান্য প্রকল্পগুলো থেকে তথ্য কপি ও অনুবাদ করা যেতে পারে, ইংরেজী ছাড়া। যেহেতু সকল উইকিমিডিয়া প্রকল্পগুলো একই রকম অথবা খাপ খায় এমন লাইসেন্স ব্যবহার করে তাদের বিষয়বস্তুর জন্য। সম্পাদনা সারাংশে উৎস নিবন্ধের লিংক রাখা যেতে পারে এজন্য অথবা অবদানকারীদের তালিকা যোগ করা যেতে পারে লেখা আকারে। তদুপরি একাজের জন্য টেমপ্লেট ব্যবহার করা যেতে পারে বা ব্যবহার করাই যুক্তিযুক্ত। আরো তথ্যের জন্য দেখুন #অন্য উইকিমিডিয়া প্রকল্প থেকে কপি   Attribution is required for copyright  Contributors to Wikipedia are not asked to surrender their copyright to the material they contribute. Instead, they are required to co-license their contributions under the copyleft licenses Creative Commons Attribution-ShareAlike 3.0 Unported License (CC BY-SA) and GNU Free Documentation License (GFDL). Both of these licenses allow reuse and modification, but reserve the right to attribution.  The CC BY-SA, section 4(c), states that:  You must ... provide ... the name of the Original Author (or pseudonym, if applicable) ... and ... in the case of an Adaptation, a credit identifying the use of the Work in the Adaptation (e.g., "French translation of the Work by Original Author," or "Screenplay based on original Work by Original Author"). The credit required by this Section 4(c) may be implemented in any reasonable manner; provided, however, that in the case of a Adaptation or Collection, at a minimum such credit will appear, if a credit for all contributing authors of the Adaptation or Collection appears, then as part of these credits and in a manner at least as prominent as the credits for the other contributing authors.  The GFDL, section 4-I, states that:  ... you must ... Preserve the section Entitled "History", Preserve its Title, and add to it an item stating at least the title, year, new authors, and publisher of the Modified Version as given on the Title Page.  The Wikimedia Foundation's Terms of Use are clear that attribution will be supplied:  in any of the following fashions: a) through a hyperlink (where possible) or URL to the article or articles you contributed to, b) through a hyperlink (where possible) or URL to an alternative, stable online copy which is freely accessible, which conforms with the license, and which provides credit to the authors in a manner equivalent to the credit given on this website, or c) through a list of all authors. (Any list of authors may be filtered to exclude very small or irrelevant contributions.)  If material is used without attribution, it violates the licensing terms under which it has been provided, which in turn violates the Reusers' rights and obligations clause of Wikipedia's copyrights policy.  Other reasons for attributing text The correct attribution of text copied from one article to another allows editors to find easily the previous edit history of the copied text with all the advantages that access to the edit history of text contained in an article provides. Listed below are some advantages appropriate attribution brings that are specific to text copied from one article to another.  If a Wikipedia article (the "parent article") contains text that is a breach of a third party copyright and it is copied to another article (the "child article"), then the child article will also contain a copyright violation. Attributing the copy in the child article as specified below helps editors identify when an inadvertent breach copyright occurred and that the editor who made the copy did so without knowledge that it was a breach of copyright (See here for an example). The appropriate attribution in the child article may also help editors trace the copyright violation back to the parent article.  If text with one or more short citations is copied from one or more parent articles into a child article, but the corresponding full reference in the parent's references section are not copied across, without appropriate attribution as specified below, it can be difficult to identify the full reference needed to support the short citations (see here for an example).   Where attribution is not needed   Not everything copied from one Wikipedia page to another requires attribution. If the re-user is the sole contributor of the text at the other page, attribution is not necessary. Content rewritten in one's own words does not need attribution. However, duplicating material by other contributors that is sufficiently creative to be copyrightable under US law (as the governing law for Wikipedia), requires attribution.   As guidance, none of the following are "creative expression" requiring attribution, for Wikipedia purposes:   Bare references;   Common expressions and idioms;   Simple, non-creative lists of information (such as a list of actors in a television program by order of appearance or alphabetical order);   Basic mathematical and scientific formulae;   Material that will be reverted and deleted in full, with no copy kept on the public wiki. (This particularly covers vandalism, private information, offensive or disruptive comments, gibberish, BLP violations and defamation, etc, that are being deleted or redacted by an administrator.)  Quotes from external sources do not need to be attributed to the original Wikipedia contributor, although any text surrounding them would be, and the original source must still be cited. However, even though attribution is not required in these cases, including a link is often useful.   Proper attribution   Attribution can be provided in any of the fashions detailed in the Terms of Use (listed above), although methods (a) and (c) — i.e., through a hyperlink (where possible) or URL to the article or articles you contributed to; or through a list of all authors — are the most practical for transferring text from one Wikipedia page to another. Both methods have strengths and weaknesses, but either satisfies the licensing requirements if properly done. Hyperlink If material has been contributed by more than one author, providing a link in the edit summary is the simplest method of providing attribution. A statement in the edit summary such as copied content from [[page name]]; see that page's history for attribution will direct interested parties to the edit history of the source page, where they can trace exactly who added what content when. A disadvantage with this method is that the page history of the original article must subsequently be retained in order to maintain attribution. To avoid the source page being inadvertently moved or deleted, it is helpful to make a note of the copying on the talk page of the source article. The template  can be used for this purpose. This template can also be added to the destination talk page. List of authors When dealing with a page edited by many, a hyperlink is the simplest solution, but if the content being copied has only one contributor, it may be preferable simply to list him or her individually. Using this method, the edit history of the source page is unnecessary, and it will not matter if the source page is later deleted or moved. A statement in the edit summary such as text originally contributed by [[User:Example]] on    serves as full attribution. If the material being copied has more than one author, attribution requirements can technically be satisfied with a note in edit summary directing attention to a list of contributors on the talk page, but as the Terms of Service indicate, a hyperlink is preferred where possible. – A dummy edit may be used to provide the edit summary attribution in either of the methods described above.  Specific situations  একত্রীকরণ এবং আলাদকরণ উইকিপিডিয়াতে অনেক কারনেই লেখা এক পাতা থেকে অন্য পাতায় নকল করার প্রয়োজন হতে পারে। এজন্য আলাদা নিয়ম এবং টেমপ্লেট রয়েছে যা প্রয়োজনীয় হিসেবে দেখা দেয় কপি করার ক্ষেত্রে। দুটি নিবন্ধ একত্রীকরণ বা বিষয়বস্তু একত্রীকরণের জন্য দেখুন উইকিপিডিয়া:একত্রীকরণ। নিবন্ধ আলাদা করার জন্য দেখুন উইকিপিডিয়া:বিভক্তিকরণ  Copying from other Wikimedia projects If copying or moving via "transwiki" from another Wikimedia project that is licensed under CC BY-SA (such as Wikimedia Commons, Wiktionary, and Wikispecies), you may satisfy attribution either by providing a complete list of authors of the original content (the complete list can be generated by copying the history of the remote page) or by providing a direct link to the original material. If the list of authors is brief, this may be provided in the edit summary. A direct link (such as an InterWikimedia link) should be included in the edit summary; the template  is available for the article's talk page. If leaving a list of authors, please also provide a URL to the original page in case it becomes necessary in the future to access that history. (See Help:Transwiki.)  Although most Wikimedia projects are licensed under CC BY-SA and require attribution consistent with the Foundation's Terms of Use, some projects are handled differently. For example, content from Wikinews is licensed under CC-BY and may be reused with attribution only to "Wikinews." (See Wikinews:Copyright.) It is the responsibility of the editor importing content to determine the license that applies and ensure that attribution is satisfied.  Translating from other language Wikimedia projects Translations of copyrighted text, even from other Wikimedia projects, are derivative works, and attribution must be given to satisfy licensing requirements. When translating material from a Wikimedia project licensed under CC BY-SA, a note identifying the Wikimedia source (such as an interlanguage link) should be provided in an edit summary in the translated page, ideally in its first edit. Where applicable, the template  can also be added to the talk page to supplement copyright attribution. You may use an edit summary like (using French as an example) Content in this edit is translated from the existing French Wikipedia article at [[:fr:Exact name of French article]]; see its history for attribution.  Content forking There are also some situations in Wikipedia where copying may not be appropriate, such as if two articles are being created on the same subject because editors of the original cannot agree on the article's development. This is called "content forking". The acceptable solution to disagreement on the development of an article is to seek consensus through dispute resolution.  Reusing deleted material  If an article is deleted, its history is removed and thus its content cannot be reused on Wikipedia—even under the same article title—unless attribution is otherwise provided (or the page undeleted). Deleted articles may not be recovered and reused from Wikipedia mirrors, Google cache, or the view-deleted administrator right.  It may sometimes be necessary to delete specific parts of an article's history for various reasons (copyright violations introduced but later excised; extreme personal attacks; personal information) through Selective History deletion, Revision Deletion or Oversight. If the article retains contributions placed by users in the deleted / oversighted revisions, those must be attributed.  Dummy edits should be used for this purpose, whenever practical; otherwise, talk page attribution will be necessary. A typical dummy edit summary could read, for instance Revision deletion for reason XYZ: Article was started by and retains contributions from [[User:Example]], as well as contributions from [[User:Example2]] and [[User:Example3]]  Userfication If an article is "userfied"—copied or moved into user space—it must be fully attributed.  If an article is being moved to userspace to avoid deletion (or to work on after deletion), the full history should be visible (restored if necessary) and then moved using the move button.  If a user wishes to copy all or part of an article to work on in userspace, he or she should use an edit summary like creating page with content copied from revision 123456789 of [[article title]].   Repairing insufficient attribution   While technically licensing violations are copyright violations, pages that contain unattributed text do not normally need to be deleted. Attribution can be belatedly supplied by the methods above, using dummy edits to record new edit summaries and via talk page attribution using the  template. Such belated attribution should make clear when the relevant text entered the page. You can also identify problem articles, in particular complex cases that you cannot fix right away, by tagging the article itself with the templates  (for a single origin) and  (for articles with multiple origins).  When possible, the re-user should be notified of the proper procedures for copying text between pages. The template  is available for addressing cut-and-paste moves. For other copying situations, the  template can be used.   একটি পাতা কাট-পেষ্ট করে স্থানান্তরের শোধন   একটি পাতার সমস্ত বিষয় যদি কাট, কপি এবং পেষ্টের মাধ্যমে স্থানান্তর করা হয় আগের পাতায় পুনর্নির্দেশনা রেখে তবে লাইসেন্স লঙ্ঘন বা ভঙ্গ করার বিষয়টি  নামক টেমপ্লেট ব্যবহার করে ঠিক করা যায়। কিন্তু অবস্থা যদি আরো জটিল হয় যেমন - একটি বিষয়ে উৎস পাতায় যদি কোন নিবন্ধ তৈরী করা হয় এবং তার সাথে সম্পর্কিত অন্য নামে আরেকটি শিরোনাম থাকে তবে ঐ অবস্থায় কোন একজন প্রশাসকের দ্বারস্থ হতে হবে পাতাগুলোর ইতিহাসকে একত্র করে দেয়ার জন্য।   আরও দেখুন    উইকিপিডিয়া:কপি-পেস্ট