MLA

The Disappointed Candidate Solus [Graphic]. Pubd. as the act directs, May 20, 1784, by W. Humphrey, No. 227 Strand, 0AD. https://collections.library.yale.edu/catalog/10727841.

APA, 6th edition

The disappointed candidate solus [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1784, Etchings England London 1784]. Pubd. as the act directs, May 20, 1784, by W. Humphrey, No. 227 Strand. https://collections.library.yale.edu/catalog/10727841.