MLA

A Scene in the School for Scandal [Graphic]. Published July 18, 1786, by S.W. Fores, N. 3 Piccadilly, 0AD. https://collections.library.yale.edu/catalog/11811228.

APA, 6th edition

A scene in the School for scandal [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1786, Etchings England London 1786]. Published July 18, 1786, by S.W. Fores, N. 3 Piccadilly. https://collections.library.yale.edu/catalog/11811228.