MLA

Corbutt, Charles, 1746-1777, printmaker. Lady Stanhope [graphic]. [approximately 1767]. https://collections.library.yale.edu/catalog/16194806.

APA, 6th edition

Corbutt, Charles, 1746-1777, printmaker. ([approximately 1767])[Lady Stanhope [graphic]]. https://collections.library.yale.edu/catalog/16194806.