One of the main reasons to cite is to avoid plagiarism. Citing your sources is a standard academic practice that allows the reader to find the sources you used to write your paper. It gives credit to other researchers and acknowledges their ideas. It provides supporting evidence for your work and increases your credibility.
Anyone can publish information on the Internet. Before using information you find on the Internet for assignments and research, it is important to judge its accuracy and to establish that the information comes from a reliable and appropriate source.
The CRAAP Test is a list of questions to help you determine if a source is credible. The acronym CRAAP stands for Currency, Relevance, Authority, Accuracy, and Purpose.