Whenever you use an an image in a educational work, you need a to give credit to the image’s creator by citing or attributing that image (just like you would with a article or book).
One of the many benefits of using a database for research (including image research) is easy citation. See the GIF below for a demonstration of ARTstor's citation generation feature. Remember to always double check any citations created by citation tools!
GIF courtesy of the ARTstor Blog.
Attribution is a way of crediting a work without using a specific publication style (like MLA, APA, or Chicago/Turabian). Any images for presentations, papers, or other formats that do not require a specific publication style should be attributed.
Include the following information (if available):
The creator, title, year created, medium, institution that houses the work, date the work was retrieved, the website from which the work was retrieved (a hyperlink if the format allows).