"First draft"
MLA
Sergeant, Elizabeth Shepley, 1881-1965. "First draft". Box 11, folder 260-64. n.d.. https://collections.library.yale.edu/catalog/10542951.
APA, 6th edition
Sergeant, Elizabeth Shepley, 1881-1965. (["Box 11, folder 260-64"])(n.d.)["First draft"]. https://collections.library.yale.edu/catalog/10542951.