MLA

Purcell, Richard, approximately 1736-approximately 1765, printmaker. Charles Prince of Wales, James Duke of York, and Princes Mary children of K. Charles the 1st / [graphic]. [between 1755 and 1766]. https://collections.library.yale.edu/catalog/16193388.

APA, 6th edition

Purcell, Richard, approximately 1736-approximately 1765, printmaker. ([between 1755 and 1766])[Charles Prince of Wales, James Duke of York, and Princes Mary children of K. Charles the 1st / [graphic]]. https://collections.library.yale.edu/catalog/16193388.