MLA

Behold, He Prayeth [Graphic]. Pub. April 1, 1789, by S.W. Fores, N. 3 Piccadilly, 0AD. https://collections.library.yale.edu/catalog/10731105.

APA, 6th edition

Behold, he prayeth [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1789, Etchings England London 1789]. Pub. April 1, 1789, by S.W. Fores, N. 3 Piccadilly. https://collections.library.yale.edu/catalog/10731105.