MLA

Wharton, Edith, 1862-1937. House plans. Box 52, folder 1548. 1909. https://collections.library.yale.edu/catalog/16792496.

APA, 6th edition

Wharton, Edith, 1862-1937. (["Box 52, folder 1548"])(1909)[House plans]. https://collections.library.yale.edu/catalog/16792496.