Note: If work is available on the web only, give the name of the artist, the "title of the work", and then follow the citation format for a website.
Artist. "Title of Photograph OR Description of Photograph's Content." Name of Sponsor OR Publisher, Date of creation (if available), Name of website, URL. Date of access.
For an image of a piece of art:
Artist. Name of Work. Date of creation (if available), Institution and city where work is housed. Name of webiste, URL. Date of access.