MLA

Marks, John Lewis, and printmaker. Monkeys in Love [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/10971418.

APA, 6th edition

Marks, J. L., & printmaker. (0 C.E.). Monkeys in love [graphic] [Satires (Visual works) England 1835, Lithographs England London 1835]. publisher not identified. https://collections.library.yale.edu/catalog/10971418.