MLA

Wharton, Edith, 1862-1937. Sturgis, Howard Overing. Box 30, folder 926-27. 1904-17. https://collections.library.yale.edu/catalog/32182692.

APA, 6th edition

Wharton, Edith, 1862-1937. (["Box 30, folder 926-27"])(1904-17)[Sturgis, Howard Overing]. https://collections.library.yale.edu/catalog/32182692.