The goal of a bibliographic citation is to allow the reader of a document to easily locate the information that was used to write that particular document.
Many professors require a bibliography or list of references with research papers.
Citing electronic resources is quite simple and in many cases similar to citing traditional resources. Remember that citations are necessary so the reader can find his or her way back to the original resource for any reason - whether it is to read the original source used to write the paper or to verify that plagiarism has not occurred. Be consistent in style. Choose the style your professor wants you to use, or, if you're not required to use a specific style, choose one you like. Be aware that the date provided in some electronic resources is not the actual publication date.