MLA

The Grand Triumvirate, or, Champions of Liberty [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/16194332.

APA, 6th edition

The grand triumvirate, or, Champions of liberty [graphic]. (0 C.E.). [Caricatures and cartoons, Acrostics, Satires (Visual works) England 1763, Etchings England London 1763]. publisher not identified. https://collections.library.yale.edu/catalog/16194332.