MLA

The Fair Northern Fugitive The Conservator of the Peace. [Graphic]. Published 1st Aug. 1791, by A. Hamilton Junr., Fleet Street, 0AD. https://collections.library.yale.edu/catalog/10732622.

APA, 6th edition

The fair northern fugitive The conservator of the peace. [graphic]. (0 C.E.). [Portrait prints, Periodical illustrations, Etchings England London 1791, Stipple engravings England London 1791]. Published 1st Aug. 1791, by A. Hamilton Junr., Fleet Street. https://collections.library.yale.edu/catalog/10732622.