MLA

The Unfortunate Ass [Graphic]. Pubd. as [the] Act directs March 11, 1784 by W. Humphrey, 227 Strand, 0AD. https://collections.library.yale.edu/catalog/10727449.

APA, 6th edition

The unfortunate ass [graphic]. (0 C.E.). [Satires (Visual works) England 1784, Etchings England London 1784]. Pubd. as [the] Act directs March 11, 1784 by W. Humphrey, 227 Strand. https://collections.library.yale.edu/catalog/10727449.