By Jack Deaso
MLA
Berberova, N. (Nina), 1901-1993. By Jack Deaso. Box 53, folder 1189. n.d.. https://collections.library.yale.edu/catalog/10453963.
APA, 6th edition
Berberova, N. (Nina), 1901-1993. (["Box 53, folder 1189"])(n.d.)[By Jack Deaso]. https://collections.library.yale.edu/catalog/10453963.