Zaretskii, Nikolai Vasil'evich
MLA
Gulʹ, Roman, 1896-1986. Zaretskii, Nikolai Vasil'evich. Box 16, folder 392-93. 1933-59, n.d.. https://collections.library.yale.edu/catalog/17277457.
APA, 6th edition
Gulʹ, Roman, 1896-1986. (["Box 16, folder 392-93"])(1933-59, n.d.)[Zaretskii, Nikolai Vasil'evich]. https://collections.library.yale.edu/catalog/17277457.