The most often used citation styles for Art is the Chicago Manual of Style, and sometimes the MLA Handbook for Writers. For more assistance, please consult a librarian or your professor.
The Art Bulletin is considered the flagship journal of the discipline. This journal probably provides the safest choice if you seek a model style.
Listed below are a few good online citation style guides, as well as print style guides which are located at the library service desk.
Zotero now has a quick and accurate tool to create a bibliography entry!
Visual sources can be difficult to cite, so be sure to 1) include as much information as you can, 2) format the elements consistently, and 3) adapt the general formats as described in published citation style guides as needed. If you have questions, please contact me.
Citing images from an image database (ARTstor, CAMIO), should include most, if not all, of this information (or as much of it as can be easily determined from the source).
Elon's Writing Center will help you understand an assignment, as well as brainstorm, draft, revise, edit & document sources.