MLA

Chapman, J. (John), active 1792-1823, printmaker. [Portraits of warriors] [graphic]. [1 March 1796]. https://collections.library.yale.edu/catalog/16816539.

APA, 6th edition

Chapman, J. (John), active 1792-1823, printmaker. ([1 March 1796])[[Portraits of warriors] [graphic]]. https://collections.library.yale.edu/catalog/16816539.