MLA

West, Rebecca, 1892-1983. Langner, Lawrence. Box 11, folder 473. 1933-36. https://collections.library.yale.edu/catalog/16479155.

APA, 6th edition

West, Rebecca, 1892-1983. (["Box 11, folder 473"])(1933-36)[Langner, Lawrence]. https://collections.library.yale.edu/catalog/16479155.