MLA

Ursa Major, or, The Old City Bear [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/10714611.

APA, 6th edition

Ursa major, or, The old city bear [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1756, Etchings England London 1756]. publisher not identified. https://collections.library.yale.edu/catalog/10714611.