MLA

The Sailor and Long-Back'd Horse [Graphic]. Published June 10th, 1797, by Laurie & Whittle, 53 Fleet Street, London, 0AD. https://collections.library.yale.edu/catalog/11106126.

APA, 6th edition

The sailor and long-back'd horse [graphic]. (0 C.E.). [Satires (Visual works) England 1797, Etchings England London 1797, Stipple engravings England London 1797, Watermarks (Paper) 1812]. Published June 10th, 1797, by Laurie & Whittle, 53 Fleet Street, London. https://collections.library.yale.edu/catalog/11106126.