Cite

[A very ancient chair of oak, back view] [art original].

MLA

Carter, John, 1748-1817, artist. [A very ancient chair of oak, back view] [art original].. [ca. 1790]. https://collections.library.yale.edu/catalog/16729720.

APA, 6th edition

Carter, John, 1748-1817, artist. ([ca. 1790])[[A very ancient chair of oak, back view] [art original].]. https://collections.library.yale.edu/catalog/16729720.