MLA

Gulʹ, Roman, 1896-1986. Vodov, Sergei Akimovich. Box 82, folder 1973. 1962. https://collections.library.yale.edu/catalog/17277462.

APA, 6th edition

Gulʹ, Roman, 1896-1986. (["Box 82, folder 1973"])(1962)[Vodov, Sergei Akimovich]. https://collections.library.yale.edu/catalog/17277462.