Polignac, Princesse de
MLA
Trefusis, Violet, 1894-1972. Polignac, Princesse de. Box 1, folder 26a. 1941. https://collections.library.yale.edu/catalog/16538051.
APA, 6th edition
Trefusis, Violet, 1894-1972. (["Box 1, folder 26a"])(1941)[Polignac, Princesse de]. https://collections.library.yale.edu/catalog/16538051.