MLA

Van Vechten, Carl, 1880-1964. Halicka, Alice. Box 352 | Folder 4708. 1937 March 14. https://collections.library.yale.edu/catalog/2036212.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 352 | Folder 4708"])(1937 March 14)[Halicka, Alice]. https://collections.library.yale.edu/catalog/2036212.