MLA

Jones, James, 1921-1977. "Peaks and Valleys," typescript. Box 25, folder 292-94. n.d.. https://collections.library.yale.edu/catalog/17063380.

APA, 6th edition

Jones, James, 1921-1977. (["Box 25, folder 292-94"])(n.d.)["Peaks and Valleys," typescript]. https://collections.library.yale.edu/catalog/17063380.