Cite

Earl of Exeter's ivory drinking horn [art original].

MLA

Harding, G. P. (George Perfect), 1780-1853, artist. Earl of Exeter's ivory drinking horn [art original].. [not after 1810]. https://collections.library.yale.edu/catalog/16822547.

APA, 6th edition

Harding, G. P. (George Perfect), 1780-1853, artist. ([not after 1810])[Earl of Exeter's ivory drinking horn [art original].]. https://collections.library.yale.edu/catalog/16822547.