MLA

Conquest of Mexico as Performed at Mr. Conduit's, Master of the Mint before the Duke of Cumberland &c. [Graphic]. Publish'd Feb. 1, 1791 by J. & J. Boydell, Cheapside, & at the Shakspeare Gallery, Pall Mall, London, 0AD. https://collections.library.yale.edu/catalog/16945094.

APA, 6th edition

Conquest of Mexico as performed at Mr. Conduit's, Master of the Mint before the Duke of Cumberland &c. [graphic]. (0 C.E.). [Etchings England London 1791]. Publish'd Feb. 1, 1791 by J. & J. Boydell, Cheapside, & at the Shakspeare Gallery, Pall Mall, London. https://collections.library.yale.edu/catalog/16945094.