MLA

The Mortified Spinster The Disappointed Secretary. [Graphic]. Published by A. Hamilton Junr. Fleet Street, 0AD. https://collections.library.yale.edu/catalog/10728387.

APA, 6th edition

The mortified spinster The disappointed secretary. [graphic]. (0 C.E.). [Portrait prints, Periodical illustrations, Engravings England London 1788, Stipple engravings England London 1788]. Published by A. Hamilton Junr. Fleet Street. https://collections.library.yale.edu/catalog/10728387.