MLA

Benét, Stephen Vincent, 1898-1943. Draft, poem, typescript, corrected. Box 50, folder 1776. undated. https://collections.library.yale.edu/catalog/17425150.

APA, 6th edition

Benét, Stephen Vincent, 1898-1943. (["Box 50, folder 1776"])(undated)[Draft, poem, typescript, corrected]. https://collections.library.yale.edu/catalog/17425150.