MLA

McKay, Claude, 1890-1948. "On the Road," typescript carbon. Box 12, folder 387. n.d.. https://collections.library.yale.edu/catalog/32269413.

APA, 6th edition

McKay, Claude, 1890-1948. (["Box 12, folder 387"])(n.d.)["On the Road," typescript carbon]. https://collections.library.yale.edu/catalog/32269413.