MLA

Hilton, J. The Present State of Europe : a Political Farce of Four Acts, as It Is Now in Rehearsal by All the Potentates Anno Dom. MDCCLXII. Act III [Graphic]. H. Jackson, 0AD. https://collections.library.yale.edu/catalog/10713034.

APA, 6th edition

Hilton, J. (0 C.E.). The present state of Europe : a political farce of four acts, as it is now in rehearsal by all the potentates anno dom. MDCCLXII. Act III [graphic] [Caricatures and cartoons, Satires (Visual works) England 1762, Etchings England London 1762]. H. Jackson. https://collections.library.yale.edu/catalog/10713034.