These online citation style guides provide overviews, for more in-depth coverage and for more obscure types of resources (images, Bible verses) use the actual style guides found in the Library's collection (see below).
Purdue University's Online Writing Lab (OWL) provides a wealth of information for the student writer. Use the Research and Citation link for further information on APA, Chicago, and MLA citation styles.
The Armacost Library provides brief citation style guides for the most commonly used citation styles (MLA, APA, Chicago, etc.) for the most commonly cited items (books, book chapters, articles, dvds, etc.).
Citing an image can be tricky. This cite tells you what bits of information will be necessary to properly cite an image, whether found in a book or online. See specific citation style guides in order to format those bits of information.