MLA

The Inflexible Porter a Tragedy / [Graphic]. Publish'd Marh. 24th, 1783, by J.R. Smith, N. 83 opposite [the] Pantheon, Oxford Street, 0AD. https://collections.library.yale.edu/catalog/17355626.

APA, 6th edition

The inflexible porter a tragedy / [graphic]. (0 C.E.). [Satires (Visual works) England 1783, Etchings England London 1783, Crayon manner prints England London 1783]. Publish'd Marh. 24th, 1783, by J.R. Smith, N. 83 opposite [the] Pantheon, Oxford Street. https://collections.library.yale.edu/catalog/17355626.