MLA

West, Rebecca, 1892-1983. New York American. Box 13, folder 610. 1933-34. https://collections.library.yale.edu/catalog/16479160.

APA, 6th edition

West, Rebecca, 1892-1983. (["Box 13, folder 610"])(1933-34)[New York American]. https://collections.library.yale.edu/catalog/16479160.