MLA

Mr. Concave [Graphic]. Pubd. Augt. 1. 1775 by MDarly ..., 0AD. https://collections.library.yale.edu/catalog/10716369.

APA, 6th edition

Mr. Concave [graphic]. (0 C.E.). [Caricatures and cartoons, Caricatures, Etchings England London 1775]. Pubd. Augt. 1. 1775 by MDarly ... https://collections.library.yale.edu/catalog/10716369.