MLA

Baker, Josephine, 1906-1975. "Visit to Villa Dordogne". Box 4, folder 201. 1972 Sep 14. https://collections.library.yale.edu/catalog/2110564.

APA, 6th edition

Baker, Josephine, 1906-1975. (["Box 4, folder 201"])(1972 Sep 14)["Visit to Villa Dordogne"]. https://collections.library.yale.edu/catalog/2110564.