MLA

Hengist & Horsa [Graphic]. Publish'd according to act Oct. 2, 1756, by Edwards & Darly at the Acorn facing Hungerford, Strand, 0AD. https://collections.library.yale.edu/catalog/10714638.

APA, 6th edition

Hengist & Horsa [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1756, Etchings England London 1756]. Publish'd according to act Oct. 2, 1756, by Edwards & Darly at the Acorn facing Hungerford, Strand. https://collections.library.yale.edu/catalog/10714638.