The main components to note when citing artworks and photographs are:
The format according to the MLA citation style guide should look like this:
Last Name, First Name. Title. Date, Institution, Location. Medium.
For photographic reproductions of artwork (e.g. images of artwork in a website), treat the book or website as a container. For instance:
Misrach, Richard. Submerged Lamppost, Salton Sea. 1985, printed 2005, Art Institute Chicago. https://www.artic.edu/artworks/191453/submerged-lamppost-salton-sea?q=photography&page=2. Chromogenic print from a digital file.
