Knopf, Alfred A., Sr.
MLA
Van Vechten, Carl, 1880-1964. Knopf, Alfred A., Sr.. Box 357 | Folder 4867. 1935 March 31. https://collections.library.yale.edu/catalog/2054972.
APA, 6th edition
Van Vechten, Carl, 1880-1964. (["Box 357 | Folder 4867"])(1935 March 31)[Knopf, Alfred A., Sr.]. https://collections.library.yale.edu/catalog/2054972.