Letters
MLA
Stieglitz, Alfred, 1864-1946. Letters. Box 64, folder 1448-1451. 1928 Jun-Aug. https://collections.library.yale.edu/catalog/2039883.
APA, 6th edition
Stieglitz, Alfred, 1864-1946. (["Box 64, folder 1448-1451"])(1928 Jun-Aug)[Letters]. https://collections.library.yale.edu/catalog/2039883.