MLA

Johnson, Owen, 1878-1952. Draft. Box 5, folder 89-97. n.d.. https://collections.library.yale.edu/catalog/2054491.

APA, 6th edition

Johnson, Owen, 1878-1952. (["Box 5, folder 89-97"])(n.d.)[Draft]. https://collections.library.yale.edu/catalog/2054491.