MLA

McKay, Claude, 1890-1948. "Miss Allah," typescript, corrected. Box 9, folder 289. n.d.. https://collections.library.yale.edu/catalog/17264753.

APA, 6th edition

McKay, Claude, 1890-1948. (["Box 9, folder 289"])(n.d.)["Miss Allah," typescript, corrected]. https://collections.library.yale.edu/catalog/17264753.