MLA

Stettheimer, Florine, 1871-1944. Diary. Box 6, folder 109-11. 1906-10. https://collections.library.yale.edu/catalog/15729158.

APA, 6th edition

Stettheimer, Florine, 1871-1944. (["Box 6, folder 109-11"])(1906-10)[Diary]. https://collections.library.yale.edu/catalog/15729158.