MLA

The Sea Lyon [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/10714605.

APA, 6th edition

The sea lyon [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1756, Etchings England London 1756, Book illustrations]. publisher not identified. https://collections.library.yale.edu/catalog/10714605.