A work of ArtTo cite a work of art (painting, sculpture, etc.) cite the artist's name, the title of the work, when it was created, the medium of the piece, and the name of the institution where the work is housed. Here's how you would cite Van Gogh's painting Starry Night, if you visited the work in person.
Images from a database
When doing research, you'll most likely come across a picture of a painting rather than the painting itself. Here's how to cite an image of Starry Night, found in the ArtStor image database. Exclude the medium of the art (oil on canvas) and add information on the database and when you accessed the image.
When citing images found on the web, try to find as much information as possible. You may not be able to find the name of the image creator or when it was created. This citation is for an image found on Flickr. I was unable to find the name of the person who created the photo, so the citation begins with the name of the image. I used the exact name that was used on the Flickr website.