MLA

Wilder, Thornton, 1897-1975. Worth, Irene. Box 64, folder 1779-1782. 1955-86, n.d.. https://collections.library.yale.edu/catalog/32267350.

APA, 6th edition

Wilder, Thornton, 1897-1975. (["Box 64, folder 1779-1782"])(1955-86, n.d.)[Worth, Irene]. https://collections.library.yale.edu/catalog/32267350.