MLA

Van Vechten, Carl, 1880-1964. Oxford, Earl, and Philip Truex, as Eileen, in "I Left My Heart at the Stage Door Canteen" musical number in This Is the Army, musical with music by Irving Berlin and book by Irving Berlin and James McColl. Box 430 | Folder 6911. 1942 August 26. https://collections.library.yale.edu/catalog/2065728.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 430 | Folder 6911"])(1942 August 26)[Oxford, Earl, and Philip Truex, as Eileen, in "I Left My Heart at the Stage Door Canteen" musical number in This Is the Army, musical with music by Irving Berlin and book by Irving Berlin and James McColl]. https://collections.library.yale.edu/catalog/2065728.