Cite

"Aphorisms on Futurism" (in CW 45), holograph

MLA

Stieglitz, Alfred, 1864-1946. "Aphorisms on Futurism" (in CW 45), holograph. Box 99, folder 2064. 1914 Jan. https://collections.library.yale.edu/catalog/17105668.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 99, folder 2064"])(1914 Jan)["Aphorisms on Futurism" (in CW 45), holograph]. https://collections.library.yale.edu/catalog/17105668.