MLA

Marks, John Lewis, and printmaker. A Genuine Dandy, or Walking Guy [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/11007965.

APA, 6th edition

Marks, J. L., & printmaker. (0 C.E.). A genuine dandy, or Walking guy [graphic] [Satires (Visual works) England 1818, Lithographs England London 1818]. publisher not identified. https://collections.library.yale.edu/catalog/11007965.