The ruffian duke [graphic]
MLA
Collings, Samuel, and printmaker. The Ruffian Duke [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/10732498.
APA, 6th edition
Collings, S., & printmaker. (0 C.E.). The ruffian duke [graphic] [Caricatures and cartoons, Satires (Visual works) England 1791, Etchings England London 1791]. publisher not identified. https://collections.library.yale.edu/catalog/10732498.