Be careful where you get your images. They are someone's intellectual property.
As a student...
You can use images from ARTstor and the VRC for the work that you turn in for school, or for your own inspiration and information.
You cannot post these images publicly online or distribute them. If you find an image that you want to use for a publication or to share outside of class, you must get the permission of the copyright holder.
To find images you can use for non-class (as well as class) purposes, use images found through the Open Access Guide.
For more information:
APA Tables and Figures (Purdue OWL)
Citing Images University of Cincinnati
Copyright and Art Issues University of Oregon
Crash Course in Copyright University of Texas
Citing Images (Colgate Visual Resources Library)
MLA Tables, Figures and Example Purdue OWL
Tables and Figures in Chicago Style Purdue OWL
Just like with your other sources, images need to be properly cited to give credit to their creator. Items obtained from the web or scanned from a print source should be attributed to the owner of the copyrighted work (unless they are marked as royalty-free).
As a general rule, the following elements are needed in the citation:
Examples in MLA
Image from a Library Database
Martin, Agnes. Morning. 1965. Painting. Tate Gallery, London. Oxford Reference, www.oxfordreference.com.
Massachusetts Historical Society. Seal of the society set in a landscape with ornaments. Proceedings of the Massachusetts Historical Society, vol. 17, 1879-1880, p. iii. JSTOR, ezproxy.umuc.edu/login?url=http://www.jstor.org/stable/25079540.
Image from a Print Source
Rousseau, Henri. The Ship in the Storm. 1896. Painting. Musee de l'Orangerie, Paris. Henri Rousseau: Jungles in Paris. By Claire Fresches, et al. National Gallery of Art, 2006. p. 232.
Muybridge, Eadweard. Photograph of a horse running. 1887. National Gallery, London. Eadweard Muybridge: The Father of the Motion Picture. By Gordon Hendricks. Grossman, 1975. p. 202.