Brief Citation based on International Federation of Library Associations and Institutions (IFLA):
Artist's Name (First and Last)
Title and Date
Museum Name and Location
Image Source and ID Number
Example:
Andokides Painter
Neck-Handled Amphora: Herakles & Cerberus, Ca. 510 B.C.
Musée du Louvre, Paris, France
ARTstor: UCSD_41822000405785
Full document available at http://help.artstor.org/wiki/index.php/Citing