MLA

Eloquence, or, The King of Epithets [Graphic]. Pubd. Jany. 1st 1782 by H. Humphrey, No. 18 New Bond Street, 0AD. https://collections.library.yale.edu/catalog/10996709.

APA, 6th edition

Eloquence, or, The king of epithets [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1782, Etchings England London 1782]. Pubd. Jany. 1st 1782 by H. Humphrey, No. 18 New Bond Street. https://collections.library.yale.edu/catalog/10996709.