MLA

Prince William's Defeat, or, The Tr-as-Ry Stormed [Graphic]. Publish'd Jany 27th 1789 by D. Fowler, Soho, 0AD. https://collections.library.yale.edu/catalog/10731088.

APA, 6th edition

Prince William's defeat, or, The Tr-as-ry stormed [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1789, Etchings England London 1789]. Publish'd Jany 27th 1789 by D. Fowler, Soho. https://collections.library.yale.edu/catalog/10731088.