MLA

H. D. (Hilda Doolittle), 1886-1961. Typescript, corrected by H.D.. Box 38, folder 993. 1941. https://collections.library.yale.edu/catalog/17064266.

APA, 6th edition

H. D. (Hilda Doolittle), 1886-1961. (["Box 38, folder 993"])(1941)[Typescript, corrected by H.D.]. https://collections.library.yale.edu/catalog/17064266.