"Oseniaia skazochka"
MLA
Korvin-Piotrovskiĭ, Vladimir Lʹvovich, 1891-1966. "Oseniaia skazochka". Box 10, folder 194. undated. https://collections.library.yale.edu/catalog/16601464.
APA, 6th edition
Korvin-Piotrovskiĭ, Vladimir Lʹvovich, 1891-1966. (["Box 10, folder 194"])(undated)["Oseniaia skazochka"]. https://collections.library.yale.edu/catalog/16601464.