MLA

Green, Valentine, 1739-1813, printmaker, publisher. [Lady Elizabeth Laura, Lady Charlotte Maria & Lady Anne Horatia, daughters to James late Earl of Waldegrave Knight of the Garter] [graphic]. [1 December 1781]. https://collections.library.yale.edu/catalog/16193270.

APA, 6th edition

Green, Valentine, 1739-1813, printmaker, publisher. ([1 December 1781])[[Lady Elizabeth Laura, Lady Charlotte Maria & Lady Anne Horatia, daughters to James late Earl of Waldegrave Knight of the Garter] [graphic]]. https://collections.library.yale.edu/catalog/16193270.