MLA

John Bull's Watchman Neglecting His Duty!!! [Graphic]. Im Verlage des Industrie-Comptoirs, 0AD. https://collections.library.yale.edu/catalog/10953020.

APA, 6th edition

John Bull's watchman neglecting his duty!!! [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1800, Etchings Germany Weimar 1800]. Im Verlage des Industrie-Comptoirs. https://collections.library.yale.edu/catalog/10953020.