|Image: David Falconer. "When the Major Home Oil Dealer Ran Out of Fuel a Special Board Was Activated..." 1973. U.S. National Archives on Flickr Commons.|
You'll find many references in the course of your research. Make sure you keep track of what you find! The library offers some great tools to help, such as Zotero.
Both Mann Library and Olin & Uris Libraries offer workshops in using Zotero.
The College Art Association has a series of guidelines (based on the Chicago Manual of Style) for image captions.
In addition to Google Scholar, a number of subscription databases allow you to track the flow of research by including ways to identify references that cite or are cited by other scholarly sources. This is a quick, although perhaps not comprehensive, way to gauge the impact of individual publications. Consult the Cited Reference Searching guide for detailed instructions in performing cited reference searches.
Chicago Manual of Style Citation Style
The Chicago Manual of Style (17th ed.)
Olin Library Ref Z253 .U69 2017 (located at the Olin Reference Desk)
The Purdue Online Writing Lab gives excellent examples (for footnotes/endnotes and bibliographies) on how to cite using the Chicago citation style: books, periodicals, web sources, film & television, and much more.
Examples for how to cite an image using the Chicago Style, from the Colgate University Visual Resources Library
MLA Citation Style
MLA Style Center (MLA's web site)
Provides some FAQ's; however, this site does not provide the full style manual online.
MLA Handbook for Writers of Research Papers (8th ed.)
Olin LB2369 .G53 2016 (located at the Reference Desk)
Purdue's OWL (Online Writing Lab) MLA Formatting and Style Guide