MLA

Chapman, J. (John), active 1792-1823, printmaker. Optics [graphic]. [1820]. https://collections.library.yale.edu/catalog/17338337.

APA, 6th edition

Chapman, J. (John), active 1792-1823, printmaker. ([1820])[Optics [graphic]]. https://collections.library.yale.edu/catalog/17338337.