Cite

[Caricature of an unknown woman] [art original].

MLA

Walpole, Horace, 1717-1797, artist. [Caricature of an unknown woman] [art original].. [1765 or 1766?]. https://collections.library.yale.edu/catalog/16034065.

APA, 6th edition

Walpole, Horace, 1717-1797, artist. ([1765 or 1766?])[[Caricature of an unknown woman] [art original].]. https://collections.library.yale.edu/catalog/16034065.