MLA

Wescott, Glenway, 1901-1987. Szold-Fritz, Bernardine to Wescott, Barbara. Box 126, folder 1968-1972. ca. 1929-50, n.d.. https://collections.library.yale.edu/catalog/17065029.

APA, 6th edition

Wescott, Glenway, 1901-1987. (["Box 126, folder 1968-1972"])(ca. 1929-50, n.d.)[Szold-Fritz, Bernardine to Wescott, Barbara]. https://collections.library.yale.edu/catalog/17065029.