MLA

H. D. (Hilda Doolittle), 1886-1961. Typescript, corrected. Box 38, folder 989. 1941. https://collections.library.yale.edu/catalog/17064263.

APA, 6th edition

H. D. (Hilda Doolittle), 1886-1961. (["Box 38, folder 989"])(1941)[Typescript, corrected]. https://collections.library.yale.edu/catalog/17064263.