MLA

Fitzgerald, Robert, 1910-1985. "Thinking of Robert Lowell: 1917-1977," draft, typescript corrected, photocopy. Box 57, folder 2124. 1978 Mar 2. https://collections.library.yale.edu/catalog/17093662.

APA, 6th edition

Fitzgerald, Robert, 1910-1985. (["Box 57, folder 2124"])(1978 Mar 2)["Thinking of Robert Lowell: 1917-1977," draft, typescript corrected, photocopy]. https://collections.library.yale.edu/catalog/17093662.