Images that you use in a class presentation, website, or research paper must be credited and cited according to the appropriate style (Turabian, SBL, etc.).
Image citations typically include the following details:
It also helps to include (if known): date, culture, and rights information.
William Blake, The Ancient of Days, 1794, British Museum, London. http://www.artstor.org (accessed January 12, 2012).
Rembrandt van Rijn, Belshazzar's Feast, 1635, National Gallery, London.
ARTstor permitted & prohibited uses : if you are using images from ARTstor, you can refer to their acceptable use policy.
Duke University's Copyright/Fair Use Policy (pdf): if you plan to use an image or work of art for publication on the web or in print, you may need to consider the implications of copyright.
Digital Image Rights Computator: use this guide to determine what copyright restrictions might apply to your use of a digital image.