MLA

Steinberg, Saul. [Drawing of a Pumpkin Head, Pineapple Head, Cactus Head, Potato Head, and Artichoke]. 0AD. https://collections.library.yale.edu/catalog/2016852.

APA, 6th edition

Steinberg, S. (0 C.E.). [Drawing of a pumpkin head, pineapple head, cactus head, potato head, and artichoke] [Cartoons (Humorous images), Drawings, Illustrations, Sketchbooks, Sketches]. https://collections.library.yale.edu/catalog/2016852.