Steichen, Edward: precis of letters
MLA
Stieglitz, Alfred, 1864-1946. Steichen, Edward: precis of letters. Box 46, folder 1090. n.d.. https://collections.library.yale.edu/catalog/17105657.
APA, 6th edition
Stieglitz, Alfred, 1864-1946. (["Box 46, folder 1090"])(n.d.)[Steichen, Edward: precis of letters]. https://collections.library.yale.edu/catalog/17105657.