MLA

Dixon, John, approximately 1740-1811, printmaker. The Right Honble. Charles Townshend Esqr. late Chancellor of the Exchequer, and one of His Majesty's Most Honble. Privy Council, &c. / [graphic]. [21 December 1770]. https://collections.library.yale.edu/catalog/33117565.

APA, 6th edition

Dixon, John, approximately 1740-1811, printmaker. ([21 December 1770])[The Right Honble. Charles Townshend Esqr. late Chancellor of the Exchequer, and one of His Majesty's Most Honble. Privy Council, &c. / [graphic]]. https://collections.library.yale.edu/catalog/33117565.