Journals Journals are a type of periodical written by a professional in the field rather than expert writers, and most articles have a bibliography of sources at the end, so if necessary, the accuracy of the sources used to write the article can be verified. In addition the articles are longer and more technical in nature. Professional journals are an excellent research source because of the credibility of the author, the in-depth nature of the articles and the work cited. Because of the technical nature of journal articles, these articles are sometimes more difficult to read. However, if you are trying to direct your paper towards more academic and scholarly research you may want to use professional journals as a primary source of information.
Online Sources Try to use online sources to supplement sources already found in previous research.
It is not the first place to do research. When using online sources it is difficult to know if the site you are accessing is an academically credible source. There are many individuals who place items on the internet which have little if any credibility. If the source originally appeared as a previously printed source like a book, magazine, or journal and if it fits you probably can use it.