Start by asking your professor what citation style is appropriate for the course. The following examples are all in MLA style.
Captions and bibliographic citations need to be created when documenting an image. You should write a descriptive caption indicating the source of the image when it appears within your text, with more detailed information in your bibliography.
Basic information necessary for citing images of works:
For example: Van Gogh, Vincent. The Starry Night. 1889. Oil on canvas, 29x36 1/4in. The Museum of Modern Art, New York.