MLA

Stieglitz, Alfred, 1864-1946. Autotype Fine Art Company, Ltd.. Box 3, folder 67. 1912. https://collections.library.yale.edu/catalog/17105615.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 3, folder 67"])(1912)[Autotype Fine Art Company, Ltd.]. https://collections.library.yale.edu/catalog/17105615.