MLA

Woodward, G. M. (George Moutard), approximately 1760-1809, artist. Sadness [art original]. [approximately 1800]. https://collections.library.yale.edu/catalog/10952865.

APA, 6th edition

Woodward, G. M. (George Moutard), approximately 1760-1809, artist. ([approximately 1800])[Sadness [art original]]. https://collections.library.yale.edu/catalog/10952865.