MLA

Miss Harriot P-l Lord S-. [Graphic]. Published as the Act directs by A. Hamilton Junr. ..., 0AD. https://collections.library.yale.edu/catalog/10716361.

APA, 6th edition

Miss Harriot P-l Lord S-. [graphic]. (0 C.E.). [Portrait prints, Periodical illustrations, Engravings England London 1775, Etchings England London 1775]. Published as the Act directs by A. Hamilton Junr. ... https://collections.library.yale.edu/catalog/10716361.