MLA

Rudge, Olga, 1895-1996. Writings. Box 13, folder 522. 1966-73, n.d.. https://collections.library.yale.edu/catalog/17082116.

APA, 6th edition

Rudge, Olga, 1895-1996. (["Box 13, folder 522"])(1966-73, n.d.)[Writings]. https://collections.library.yale.edu/catalog/17082116.