Cite

Baby being fed by Emmy

MLA

Stieglitz, Alfred, 1864-1946. Baby being fed by Emmy. Box 132. 1899 Dec. https://collections.library.yale.edu/catalog/2002603.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 132"])(1899 Dec)[Baby being fed by Emmy]. https://collections.library.yale.edu/catalog/2002603.