MLA

A Political Battle Royal Design'd for Broughton's New Amphitheater / [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/10700435.

APA, 6th edition

A political battle royal design'd for Broughton's new amphitheater / [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1743, Etchings England London 1743, Watermarks (Paper)]. publisher not identified. https://collections.library.yale.edu/catalog/10700435.