Cite

[Portrait of Wilmarth Sheldon Lewis] [art original].

MLA

Aymar, Gordon C. (Gordon Christian), 1893-1989, artist. [Portrait of Wilmarth Sheldon Lewis] [art original].. [not after 1979]. https://collections.library.yale.edu/catalog/16835242.

APA, 6th edition

Aymar, Gordon C. (Gordon Christian), 1893-1989, artist. ([not after 1979])[[Portrait of Wilmarth Sheldon Lewis] [art original].]. https://collections.library.yale.edu/catalog/16835242.