MLA

Earlom, Richard, 1743-1822, printmaker. The exhibition of the Royal Academy of Painting, in the year 1771 from an original drawing in the possession of Robt. Sayer / [graphic]. published as the act directs, 20 May 1772.. https://collections.library.yale.edu/catalog/10715918.

APA, 6th edition

Earlom, Richard, 1743-1822, printmaker. (published as the act directs, 20 May 1772.)[The exhibition of the Royal Academy of Painting, in the year 1771 from an original drawing in the possession of Robt. Sayer / [graphic]]. https://collections.library.yale.edu/catalog/10715918.