Cite

[Sergeant William Duff] [graphic]

MLA

Kay, John, 1742-1826, printmaker. [Sergeant William Duff] [graphic]. [1816]. https://collections.library.yale.edu/catalog/10967896.

APA, 6th edition

Kay, John, 1742-1826, printmaker. ([1816])[[Sergeant William Duff] [graphic]]. https://collections.library.yale.edu/catalog/10967896.