MLA

The Courtiers Assembled on Hearing the News of the Death of the Rt. Honble. Wm. Beckford [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/10713546.

APA, 6th edition

The courtiers assembled on hearing the news of the death of the Rt. Honble. Wm. Beckford [graphic]. (0 C.E.). [Caricatures and cartoons, Satires (Visual works) England 1770, Etchings England London 1770, Periodical illustrations England 1770]. publisher not identified. https://collections.library.yale.edu/catalog/10713546.