MLA

Brodsky, Joseph, 1940-1996. Mezhplanetnoe, draft. Box 61 | Folder 1298. undated. https://collections.library.yale.edu/catalog/17306073.

APA, 6th edition

Brodsky, Joseph, 1940-1996. (["Box 61 | Folder 1298"])(undated)[Mezhplanetnoe, draft]. https://collections.library.yale.edu/catalog/17306073.