MLA

The Political Machine That Goes without Horses [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/10713447.

APA, 6th edition

The political machine that goes without horses [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1769, Etchings England London 1769, Periodical illustrations]. publisher not identified. https://collections.library.yale.edu/catalog/10713447.