MLA

The Pliant Fair The Legal Adulterer. [Graphic]. Publish'd 1st April 1791 by A. Hamilton Junr. Fleet Street, 0AD. https://collections.library.yale.edu/catalog/10732559.

APA, 6th edition

The pliant fair The legal adulterer. [graphic]. (0 C.E.). [Portrait prints, Periodical illustrations, Satires (Visual works) England 1791, Etchings England London 1791, Engravings England London 1791]. Publish'd 1st April 1791 by A. Hamilton Junr. Fleet Street. https://collections.library.yale.edu/catalog/10732559.