MLA

"Two Pair of Portraits" Presented to All the Unbiased Electors of Great Britain by John Horne Tooke / [Graphic]. Im Verlage des Industrie-Comptoirs, 0AD. https://collections.library.yale.edu/catalog/11823878.

APA, 6th edition

"Two pair of portraits" presented to all the unbiased electors of Great Britain by John Horne Tooke / [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) Germany 1799, Periodical illustrations Germany 1799, Etchings Germany 1799]. Im Verlage des Industrie-Comptoirs. https://collections.library.yale.edu/catalog/11823878.