MLA

Theatre Royal April [Blank] a Comedy with The Mock Doctor for the Benefit of the Author of the Farce / [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/17324507.

APA, 6th edition

Theatre Royal April [blank] a comedy with The mock doctor for the benefit of the author of the farce / [graphic]. (0 C.E.). [Tickets, Etchings England London 1800]. publisher not identified. https://collections.library.yale.edu/catalog/17324507.