MLA

Van Vechten, Carl, 1880-1964. Gollner, Nana, in Shadow of the Wind, ballet choreographed by Antony Tudor. Box 407, folder 6337. 1948 April 23. https://collections.library.yale.edu/catalog/33270818.

APA, 6th edition

Van Vechten, Carl, 1880-1964. (["Box 407, folder 6337"])(1948 April 23)[Gollner, Nana, in Shadow of the Wind, ballet choreographed by Antony Tudor]. https://collections.library.yale.edu/catalog/33270818.