MLA

Stieglitz, Alfred, 1864-1946. John Marin: fourteen portraits. Box 147, folder 2728-2729. 1964. https://collections.library.yale.edu/catalog/10732810.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 147, folder 2728-2729"])(1964)[John Marin: fourteen portraits]. https://collections.library.yale.edu/catalog/10732810.