Cite

A sphere projecting against a plane [graphic].

MLA

Gillray, James, 1756-1815, printmaker. A sphere projecting against a plane [graphic].. [3 January 1792]. https://collections.library.yale.edu/catalog/10732725.

APA, 6th edition

Gillray, James, 1756-1815, printmaker. ([3 January 1792])[A sphere projecting against a plane [graphic].]. https://collections.library.yale.edu/catalog/10732725.