MLA

Hercules Cleaning the Augean Stable [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/10713334.

APA, 6th edition

Hercules cleaning the Augean stable [graphic]. (0 C.E.). [Caricatures and cartoons, Periodical illustrations, Satires (Visual works) England 1768, Etchings England London 1768]. publisher not identified. https://collections.library.yale.edu/catalog/10713334.