A knowing one [graphic].
MLA
A Knowing One [Graphic]. Pub. Aug. 21, 1790, by S.W. Fores, N. 3 Piccadilly, 0AD. https://collections.library.yale.edu/catalog/10731305.
APA, 6th edition
A knowing one [graphic]. (0 C.E.). [Satires (Visual works) England 1790, Engravings England London 1790, Etchings England London 1790]. Pub. Aug. 21, 1790, by S.W. Fores, N. 3 Piccadilly. https://collections.library.yale.edu/catalog/10731305.