MLA

Stieglitz, Alfred, 1864-1946. General articles. Box 235, folder 4127-4132. 1926-81. https://collections.library.yale.edu/catalog/32190214.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 235, folder 4127-4132"])(1926-81)[General articles]. https://collections.library.yale.edu/catalog/32190214.