MLA

Sayers, James, 1748-1823, printmaker. John Bull's sacrifice to Janus a design for a peace offering to the Convention / [graphic]. [17 March 1794]. https://collections.library.yale.edu/catalog/16194461.

APA, 6th edition

Sayers, James, 1748-1823, printmaker. ([17 March 1794])[John Bull's sacrifice to Janus a design for a peace offering to the Convention / [graphic]]. https://collections.library.yale.edu/catalog/16194461.