MLA

Van Vechten, Carl, 1880-1964. Lyon, Annabelle, as Angelo, a page, in Bluebeard, choreographed by Michel Fokine.. Box 363 | Folder 5020. 1941 December 19. https://collections.library.yale.edu/catalog/2065387.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 363 | Folder 5020"])(1941 December 19)[Lyon, Annabelle, as Angelo, a page, in Bluebeard, choreographed by Michel Fokine.]. https://collections.library.yale.edu/catalog/2065387.