Citing Your Sources There are a number of different styles or formats for citations. Which style you use depends upon the subject discipline you are working in. If you are uncertain about which style to use, ask your professor. Each style includes the same basic parts of a citation, but may organize them slightly differently. Some Commonly Used Writing Style Guides: MLA Handbook for Writers of Research Papers The MLA (Modern Language Association) style is often used by students in Art & design. Always check with your professor to see which style s/he prefers. A Manual for Writers of Term Papers, Theses, and Dissertations This commonly-used style guide by Kate Turabian is a student version of a longer guide, The Chicago Manual of Style. The Publication Manual of the American Psychological Association (APA) The APA style is often used by students in the social sciences. Style guides are available at the reference desk at the Art, Architecture & Engineering Library. Online handouts are also available.