MLA

Woodward, G. M. (George Moutard), approximately 1760-1809, artist. Union between England & Ireland [art original].. [approximately 1800]. https://collections.library.yale.edu/catalog/10952839.

APA, 6th edition

Woodward, G. M. (George Moutard), approximately 1760-1809, artist. ([approximately 1800])[Union between England & Ireland [art original].]. https://collections.library.yale.edu/catalog/10952839.