MLA

The Polite Mrs. W-Ntw-h The Pacific Admiral. [Graphic]. Publish'd June 1, 1785, by A. Hamilton Junr. Fleet Street, 0AD. https://collections.library.yale.edu/catalog/10727995.

APA, 6th edition

The polite Mrs. W-ntw-h The Pacific admiral. [graphic]. (0 C.E.). [Portrait prints, Periodical illustrations, Stipple engravings England London 1785, Engravings England London 1785]. Publish'd June 1, 1785, by A. Hamilton Junr. Fleet Street. https://collections.library.yale.edu/catalog/10727995.