MLA

What May Be Doing Abroad ; What Is Doing at Home [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/10713415.

APA, 6th edition

What may be doing abroad ; What is doing at home [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1769, Periodical illustrations, Etchings England London 1769]. publisher not identified. https://collections.library.yale.edu/catalog/10713415.