The University of Iowa's Writing Center offers links to a variety of citation resources: http://writingcenter.uiowa.edu/resources
Purdue's Online Writing Lab (OWL) has the most comprehensive descriptions of MLA, APA, and Chicago: https://owl.english.purdue.edu/media/pdf/20110928111055_949.pdf
Guide to the terms of classical and renaissance rhetoric. Sometimes it is difficult to see the forest (the big picture) of rhetoric because of the trees (the hundreds of Greek and Latin terms naming figures of speech, etc.) within rhetoric.
The Writing Center assists with all writing projects, including multimedia projects, at any stage of development. Our services are free and available to anyone in the University of Iowa community. Our job is to help you become a better writer, reader and critical thinker.