MLA

H. D. (Hilda Doolittle), 1886-1961. "Sagesse," notebooks. Box 34, folder 884. n.d.. https://collections.library.yale.edu/catalog/17064226.

APA, 6th edition

H. D. (Hilda Doolittle), 1886-1961. (["Box 34, folder 884"])(n.d.)["Sagesse," notebooks]. https://collections.library.yale.edu/catalog/17064226.