MLA

The King and His Friends [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/10727297.

APA, 6th edition

The King and his friends [graphic]. (0 C.E.). [Portraits, Caricatures and cartoons, Satires (Visual works) England 1770, Portrait prints, Periodical illustrations, Engravings England London 1770, Etchings England London 1770]. publisher not identified. https://collections.library.yale.edu/catalog/10727297.