In MLA style, an image requires a caption with an in-text citation and an entry in Works Cited.
An image caption provides information about the image and credits the source of the image. Give each image a figure number (Fig. 1, Fig. 2, etc.).
If the image is a drawing, rendering, infographic, or other illustration, include:
If the image is a photograph of a building, include:
If the image is a photograph or reproduction of a work of art, include:
If you don’t see all of this information in the caption of the image or the text around it, look for a separate list of image credits. This list is often called List of Illustrations, Illustration Credits, Image Credits, or simply Credits. In books, it may be either at the beginning or at the end of the book.
At the end of the caption, credit the source of the image with a credit line, which is formatted as an in-text citation. Here's an example: