MLA

Stettheimer, Florine, 1871-1944. Diary. Box 6, folder 115-17. 1925-37. https://collections.library.yale.edu/catalog/17054795.

APA, 6th edition

Stettheimer, Florine, 1871-1944. (["Box 6, folder 115-17"])(1925-37)[Diary]. https://collections.library.yale.edu/catalog/17054795.