MLA

Parkyns, George Isham, approximately 1750-approximately 1820, printmaker. The Porch-House, Chertsey [graphic]. [1 January 1793]. https://collections.library.yale.edu/catalog/16035365.

APA, 6th edition

Parkyns, George Isham, approximately 1750-approximately 1820, printmaker. ([1 January 1793])[The Porch-House, Chertsey [graphic]]. https://collections.library.yale.edu/catalog/16035365.