MLA

Stein, Gertrude, 1874-1946. Manuscript notebooks. Box 64, folder 1131-1132. [1927]. https://collections.library.yale.edu/catalog/2020773.

APA, 6th edition

Stein, Gertrude, 1874-1946. (["Box 64, folder 1131-1132"])([1927])[Manuscript notebooks]. https://collections.library.yale.edu/catalog/2020773.