This LibGuide provides a central location for many resources about citation styles, research practices, and plagiarism (and how and why to avoid it!). From here you can explore the specific citations styles you'll encounter here at St. Mark's.
MLA: "MLA style is most commonly used to cite sources within the language arts, cultural studies, and other humanities disciplines." -- OWL Purdue
APA: "APA (American Psychological Association) style is most commonly used to cite sources within the social sciences." -- OWL Purdue
Chicago: "The Chicago Manual of Style (CMOS) covers a variety of topics from manuscript preparation and publication to grammar, usage, and documentation, and as such, it has been lovingly dubbed the 'editor's bible.'" -- OWL Purdue
Err on the side of caution and cite more than you think you need to. It's much easier to remove a citation than it is to add one in later!
If you incorporate someone else's work into your paper using these methods, you need to cite it!
The formatting and content for these citation guides is borrowed heavily from the citation LibGuide at the Butler University Libraries and Center for Academic Technology.