Cite

Ly. Duncannon [art original].

MLA

Harding, G. P. (George Perfect), 1780-1853, artist. Ly. Duncannon [art original].. [ca. 1801]. https://collections.library.yale.edu/catalog/17469269.

APA, 6th edition

Harding, G. P. (George Perfect), 1780-1853, artist. ([ca. 1801])[Ly. Duncannon [art original].]. https://collections.library.yale.edu/catalog/17469269.