Cite

Qui color albus erat, nunc est contrarius albo [art original].

MLA

Steevens, George, 1736-1800, artist. Qui color albus erat, nunc est contrarius albo [art original].. [between 1743 and 1799]. https://collections.library.yale.edu/catalog/16194000.

APA, 6th edition

Steevens, George, 1736-1800, artist. ([between 1743 and 1799])[Qui color albus erat, nunc est contrarius albo [art original].]. https://collections.library.yale.edu/catalog/16194000.