MLA

Congressional Pugilists [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/10941119.

APA, 6th edition

Congressional pugilists [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) Pennsylvania 1798, Etchings Pennsylvania Philadelphia 1798]. publisher not identified. https://collections.library.yale.edu/catalog/10941119.