It's important to cite sources you used in your research for several reasons:
The standard citation style guide for the humanities, especially languages and literature, is the MLA Handbook, 8th edition, 2016. The Modern Language Association of America (MLA) publishes the manual. It is commonly referred to it as the "MLA Manual" or the "MLA Handbook".
Links to MLA support:
The standard citation style guide book for the fields of business, education, health science, public service, and social science is the Publication Manual of the American Psychological Association, 6th edition, 2010. The American Psychological Association (APA) publishes the manual. We commonly refer to it as "the APA Manual".
Links to APA Support: