Cite

[Untitled - Emmy (?) asleep]

MLA

Stieglitz, Alfred, 1864-1946. [Untitled - Emmy (?) asleep]. Box 132. n.d.. https://collections.library.yale.edu/catalog/2002611.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 132"])(n.d.)[[Untitled - Emmy (?) asleep]]. https://collections.library.yale.edu/catalog/2002611.