MLA

Van Vechten, Carl, 1880-1964. Abdul Wahab, Khaled. Box 330, folder 4076. 1936 December 2. https://collections.library.yale.edu/catalog/2029372.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 330, folder 4076"])(1936 December 2)[Abdul Wahab, Khaled]. https://collections.library.yale.edu/catalog/2029372.