York [graphic].
MLA
Mortimer, John Hamilton, 1740-1779, printmaker. York [graphic].. [15 March 1776]. https://collections.library.yale.edu/catalog/17335709.
APA, 6th edition
Mortimer, John Hamilton, 1740-1779, printmaker. ([15 March 1776])[York [graphic].]. https://collections.library.yale.edu/catalog/17335709.