MLA

Woodward, G. M. (George Moutard), approximately 1760-1809, artist. [Single combat in Moor-Fields, or, Magnanimous Paul O! challenging all O!] [art original].. [approximately 1801]. https://collections.library.yale.edu/catalog/15813436.

APA, 6th edition

Woodward, G. M. (George Moutard), approximately 1760-1809, artist. ([approximately 1801])[[Single combat in Moor-Fields, or, Magnanimous Paul O! challenging all O!] [art original].]. https://collections.library.yale.edu/catalog/15813436.