Cite

[Five heads] [art original]

MLA

Mortimer, John Hamilton, 1740-1779, artist. [Five heads] [art original]. [1775?]. https://collections.library.yale.edu/catalog/16034074.

APA, 6th edition

Mortimer, John Hamilton, 1740-1779, artist. ([1775?])[[Five heads] [art original]]. https://collections.library.yale.edu/catalog/16034074.