MLA

Smith, John Raphael, 1752-1812, printmaker. Lady Caroline Montague daughter of his Grace the Duke of Buccleugh / [graphic]. [1 November 1777]. https://collections.library.yale.edu/catalog/10996966.

APA, 6th edition

Smith, John Raphael, 1752-1812, printmaker. ([1 November 1777])[Lady Caroline Montague daughter of his Grace the Duke of Buccleugh / [graphic]]. https://collections.library.yale.edu/catalog/10996966.