Cite

[Mary Kirk Lady Vernon] [graphic].

MLA

[Mary Kirk Lady Vernon] [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/16193012.

APA, 6th edition

[Mary Kirk Lady Vernon] [graphic]. (0 C.E.). [Portrait prints, Etchings England London 1797, Drypoints England London 1797, Annotations (Provenance) 18th century]. publisher not identified. https://collections.library.yale.edu/catalog/16193012.