MLA

Lovat to His Royal Highness the Duke of Cumberland Sends Greeting [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/11001103.

APA, 6th edition

Lovat to His Royal Highness the Duke of Cumberland sends greeting [graphic]. (0 C.E.). [Caricatures and cartoons, Portrait prints, Engravings England London 1746, Poems England London 1746]. publisher not identified. https://collections.library.yale.edu/catalog/11001103.