MLA

West, Rebecca, 1892-1983. Vinaver, Stanislav. Box 27, folder 1208. 1937 Jun 11. https://collections.library.yale.edu/catalog/17302940.

APA, 6th edition

West, Rebecca, 1892-1983. (["Box 27, folder 1208"])(1937 Jun 11)[Vinaver, Stanislav]. https://collections.library.yale.edu/catalog/17302940.