MLA

Tchelitchew, Pavel, 1898-1957. Nabokov, Nicolas. Box 27, folder 452b. 1935-1936. https://collections.library.yale.edu/catalog/17204712.

APA, 6th edition

Tchelitchew, Pavel, 1898-1957. (["Box 27, folder 452b"])(1935-1936)[Nabokov, Nicolas]. https://collections.library.yale.edu/catalog/17204712.