When using images in research projects, you need to cite your image sources just as you cite your text sources.
The information you will need:
If you found the image in a book you will need the author, title, publisher information, date, and page, figure or plate number of the reproduction.
If you found the image online you will need an access date, the web site or database address (URL) and in some cases an image ID number.
APA
Creator's Last Name, First Initial. (Year of creation). Title of image or description of image. [Type of work]. Location or Retrieved from URL/database.
Chicago
In the humanities, citations are provided in footnotes and endnotes along with a bibliography. Images can be cited using captions or in a bibliography. Check with your instructor for the correct manner.
MLA
Cite the artist's name, title, usually underlined, and the institution or individual who owns the work, and the city. If you want to indicate the work's date, include it after the title. For a work of art you viewed online, end your citation with your date of access and the URL.