MLA

Shewing a Good Fig'Ger [Sic] of a Horse [Graphic]. Pubd. May 5th, 1801 by S.W. Fores, 50 Piccadilly, 0AD. https://collections.library.yale.edu/catalog/15813472.

APA, 6th edition

Shewing a good fig'ger [sic] of a horse [graphic]. (0 C.E.). [Satires (Visual works) England 1801, Stipple engravings England London 1801, Etchings England London 1801, Artists' devices, Watermarks (Paper) J Whatman 1824]. Pubd. May 5th, 1801 by S.W. Fores, 50 Piccadilly. https://collections.library.yale.edu/catalog/15813472.