MLA

H. D. (Hilda Doolittle), 1886-1961. Typescript, carbon. Box 38, folder 986. 1941. https://collections.library.yale.edu/catalog/17064260.

APA, 6th edition

H. D. (Hilda Doolittle), 1886-1961. (["Box 38, folder 986"])(1941)[Typescript, carbon]. https://collections.library.yale.edu/catalog/17064260.