Armchairs
MLA
Stein, Gertrude, 1874-1946. Armchairs. 4294 (Art) | 4293 (Art). n.d.. https://collections.library.yale.edu/catalog/2017767.
APA, 6th edition
Stein, Gertrude, 1874-1946. (["4294 (Art) | 4293 (Art)"])(n.d.)[Armchairs]. https://collections.library.yale.edu/catalog/2017767.