MLA

Stieglitz, Alfred, 1864-1946. Kusama, Yayoi. Box 199, folder 3414. 1955-84, n.d.. https://collections.library.yale.edu/catalog/15235794.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 199, folder 3414"])(1955-84, n.d.)[Kusama, Yayoi]. https://collections.library.yale.edu/catalog/15235794.