From the Library of Congress, this page provides MLA and Turabian citation formats for primary sources including films, legal documents, maps, photographs, recorded sound, special presentations, and texts.
A great resource on how to do research and information on specific citation styles including, MLA, APA, and Chicago.
Other Style Guides
The Bluebook: A uniform system of citation
Call Number: Ready Ref KF 245 .U55
Publication Date: 2005
Availability and more information from Catalyst...
This is the style guide used for law and legal studies. You can typically use Chicago for law, but the Blue Book has myriad examples of particular legal sources like IGO documents.