"The Pupil": typescript
MLA
Purdy, James, 1914-2009. "The Pupil": typescript. Box 13, folder 293. n.d.. https://collections.library.yale.edu/catalog/17197924.
APA, 6th edition
Purdy, James, 1914-2009. (["Box 13, folder 293"])(n.d.)["The Pupil": typescript]. https://collections.library.yale.edu/catalog/17197924.