All of these reference books are available at the reference desk in the library. You can also find copies of The Everyday Writer in the Writing Center (Anderson 104).
When in doubt about citations, ask the O.W.L. Photo courtesy of Phil Reed
One of the most reliable online resources for MLA, APA, and Chicago style citations is The Purdue Online Writing Lab (affectionately dubbed "The O.W.L."), where you will find detailed style guides for all three of these styles, along with American Medical Association Style.
If you still have questions, try consulting one of the reference books listed on the left or another tutor.
Citing archival material, such as a primary source letter or another print document, is different than citing other library material such as books, journals, or articles. See the library's guide to archival citations for information on how to cite archival material in APA, MLA, and Chicago Style.