Other unsorted letters in French
MLA
Nabokov, Nicolas, 1903-1978. Other unsorted letters in French. Box 2, folder 52-54. 1920s-1970s. https://collections.library.yale.edu/catalog/16165977.
APA, 6th edition
Nabokov, Nicolas, 1903-1978. (["Box 2, folder 52-54"])(1920s-1970s)[Other unsorted letters in French]. https://collections.library.yale.edu/catalog/16165977.