MLA

Zilboorg, Gregory, 1890-1959. Untitled play, typescript. Box 6, folder 72. 1944. https://collections.library.yale.edu/catalog/17085346.

APA, 6th edition

Zilboorg, Gregory, 1890-1959. (["Box 6, folder 72"])(1944)[Untitled play, typescript]. https://collections.library.yale.edu/catalog/17085346.