MLA

Stein, Gertrude, 1874-1946. Clippings. Box 64, folder 1126. 1940-42. https://collections.library.yale.edu/catalog/17105710.

APA, 6th edition

Stein, Gertrude, 1874-1946. (["Box 64, folder 1126"])(1940-42)[Clippings]. https://collections.library.yale.edu/catalog/17105710.