Cite

Guillaume, Paul

MLA

Stieglitz, Alfred, 1864-1946. Guillaume, Paul. Box 21, folder 509. 1914-15. https://collections.library.yale.edu/catalog/9998781.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 21, folder 509"])(1914-15)[Guillaume, Paul]. https://collections.library.yale.edu/catalog/9998781.