MLA

Miller, John, 1715-1790?, printmaker. Wm. Beckford Esq. Lord Mayor 1769 Js. Townsend Esq. Sheriff ; Jno. Sawbridge Esq. Sheriff. [graphic]. [1769]. https://collections.library.yale.edu/catalog/15816304.

APA, 6th edition

Miller, John, 1715-1790?, printmaker. ([1769])[Wm. Beckford Esq. Lord Mayor 1769 Js. Townsend Esq. Sheriff ; Jno. Sawbridge Esq. Sheriff. [graphic]]. https://collections.library.yale.edu/catalog/15816304.