MLA

Jones, James, 1921-1977. "American Perfection," typescript. Box 25, folder 259-60. n.d.. https://collections.library.yale.edu/catalog/17063360.

APA, 6th edition

Jones, James, 1921-1977. (["Box 25, folder 259-60"])(n.d.)["American Perfection," typescript]. https://collections.library.yale.edu/catalog/17063360.