MLA

Stedman, Laura, 1881-1939. Brower, Beatrice. Box 5, folder 74. 1927-1928. https://collections.library.yale.edu/catalog/17207723.

APA, 6th edition

Stedman, Laura, 1881-1939. (["Box 5, folder 74"])(1927-1928)[Brower, Beatrice]. https://collections.library.yale.edu/catalog/17207723.