MLA

The Man Wot Guards the Hopposition [Graphic]. Pubd. by J. Field, 65 Quadrant Piccadilly, 0AD. https://collections.library.yale.edu/catalog/33224103.

APA, 6th edition

The man wot guards the Hopposition [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1829, Etchings England London 1829]. Pubd. by J. Field, 65 Quadrant Piccadilly. https://collections.library.yale.edu/catalog/33224103.