MLA citations style consists of a works cited list and use of in-text citations. Use this guide as a reference point on how to cite correctly.
Cite an Image from Text:
Cite the entire book for in your works cited page.
In-text example without a page number:
One political cartoonist working during the 1919 Paris peace talks depicted Bolshevism as an aggressive, predatory hawk, and the peace treaty as an unknowing dove (MacMillan, fig. 6).
In-text example with a page number:
In describing the influences of Byzantine and Levantine silks on Anglo-Saxon art, C. R. Dodwell includes an image from the Bayeux Tapestry depicting two beasts eating their own tales (fig. 45, p. 169).
MLA Handbook, 9th Ed., pp. 6-8
https://style.mla.org/images-in-books/