MLA

The Irresistible Mrs S-Ns The Caledonian Orator. [Graphic]. Published as the Act directs by A. Hamilton Junr. ..., 0AD. https://collections.library.yale.edu/catalog/10723004.

APA, 6th edition

The irresistible Mrs S-ns The Caledonian orator. [graphic]. (0 C.E.). [Portrait prints, Periodical illustrations, Engravings England London 1776, Stipple engravings England London 1776, Etchings England London 1776]. Published as the Act directs by A. Hamilton Junr. ... https://collections.library.yale.edu/catalog/10723004.