MLA

The Celebrated Mrs. H-n ; The Bloomsbury Bonvivant. [Graphic]. Publish'd by A. Hamilton Junr. Fleet Street, 0AD. https://collections.library.yale.edu/catalog/10728018.

APA, 6th edition

The celebrated Mrs. H-n ; The Bloomsbury bonvivant. [graphic]. (0 C.E.). [Portrait prints, Periodical illustrations, Stipple engravings England London 1785, Engravings England London 1785]. Publish'd by A. Hamilton Junr. Fleet Street. https://collections.library.yale.edu/catalog/10728018.