Cite

"They Know Not," play, typescript

MLA

Zilboorg, Gregory, 1890-1959. "They Know Not," play, typescript. Box 6, folder 73. undated. https://collections.library.yale.edu/catalog/17085347.

APA, 6th edition

Zilboorg, Gregory, 1890-1959. (["Box 6, folder 73"])(undated)["They Know Not," play, typescript]. https://collections.library.yale.edu/catalog/17085347.