MLA

H. D. (Hilda Doolittle), 1886-1961. Typescript. Box 43, folder 1097. n.d.. https://collections.library.yale.edu/catalog/10187215.

APA, 6th edition

H. D. (Hilda Doolittle), 1886-1961. (["Box 43, folder 1097"])(n.d.)[Typescript]. https://collections.library.yale.edu/catalog/10187215.