MLA

Ward, William James, approximately 1800-1840, printmaker, publisher. [The Right Honble. Charles Earl Grey, First Lord of the Treasury] [graphic]. [approximately 1833]. https://collections.library.yale.edu/catalog/33192004.

APA, 6th edition

Ward, William James, approximately 1800-1840, printmaker, publisher. ([approximately 1833])[[The Right Honble. Charles Earl Grey, First Lord of the Treasury] [graphic]]. https://collections.library.yale.edu/catalog/33192004.