MLA

Sheppard, Robert, active 1730-1740, printmaker. His Royal Highness Prince George of Denmarke, &c. [graphic]. [1733]. https://collections.library.yale.edu/catalog/10955264.

APA, 6th edition

Sheppard, Robert, active 1730-1740, printmaker. ([1733])[His Royal Highness Prince George of Denmarke, &c. [graphic]]. https://collections.library.yale.edu/catalog/10955264.