Cite

[Sketches of men, some with hats, and double decker buses]

MLA

Steinberg, Saul. [Sketches of Men, Some with Hats, and Double Decker Buses]. 0AD. https://collections.library.yale.edu/catalog/2016713.

APA, 6th edition

Steinberg, S. (0 C.E.). [Sketches of men, some with hats, and double decker buses] [Cartoons (Humorous images), Drawings, Illustrations, Sketchbooks, Sketches]. https://collections.library.yale.edu/catalog/2016713.