MLA

Such Things Are : Telles Choses Sont That Such Things Are We Must Allow, but Such Things Never Were till Now. [Graphic]. Publish'd April 2, 1787 by S.W. Fores at the Caricature Warehouse, No. 3 Piccadilly, 0AD. https://collections.library.yale.edu/catalog/10728297.

APA, 6th edition

Such things are : Telles choses sont that such things are we must allow, but such things never were till now. [graphic]. (0 C.E.). [Parodies, imitations, etc, Satires (Visual works) England 1787, Etchings England London 1787, Watermarks (Paper) Curteis & Sons]. Publish'd April 2, 1787 by S.W. Fores at the Caricature Warehouse, No. 3 Piccadilly. https://collections.library.yale.edu/catalog/10728297.