Cite

[Three sketches of Horace Walpole in 1788] [art original].

MLA

Carter, John, 1748-1817, artist. [Three sketches of Horace Walpole in 1788] [art original].. [1788]. https://collections.library.yale.edu/catalog/15808815.

APA, 6th edition

Carter, John, 1748-1817, artist. ([1788])[[Three sketches of Horace Walpole in 1788] [art original].]. https://collections.library.yale.edu/catalog/15808815.