MLA

Carson, Rachel, 1907-1964. Fragments. Box 52, folder 966. n.d.. https://collections.library.yale.edu/catalog/15789736.

APA, 6th edition

Carson, Rachel, 1907-1964. (["Box 52, folder 966"])(n.d.)[Fragments]. https://collections.library.yale.edu/catalog/15789736.