MLA

Stettheimer, Florine, 1871-1944. Diary. Box 6, folder 112-114. 1912-24. https://collections.library.yale.edu/catalog/17054794.

APA, 6th edition

Stettheimer, Florine, 1871-1944. (["Box 6, folder 112-114"])(1912-24)[Diary]. https://collections.library.yale.edu/catalog/17054794.