A sphere projecting against a plane [graphic].
MLA
Gillray, James, 1756-1815, printmaker. A sphere projecting against a plane [graphic].. [1792 i.e. not before 1849]. https://collections.library.yale.edu/catalog/15810075.
APA, 6th edition
Gillray, James, 1756-1815, printmaker. ([1792 i.e. not before 1849])[A sphere projecting against a plane [graphic].]. https://collections.library.yale.edu/catalog/15810075.