MLA

Brodsky, Joseph, 1940-1996. Series II -- Writings -- Poetry -- Individual Poems -- Nazidanie, English translation by George Kline and Brodsky. Box 195, folder 4263. 1986-2000, undated. https://collections.library.yale.edu/catalog/11874995.

APA, 6th edition

Brodsky, Joseph, 1940-1996. (["Box 195, folder 4263"])(1986-2000, undated)[Series II -- Writings -- Poetry -- Individual Poems -- Nazidanie, English translation by George Kline and Brodsky]. https://collections.library.yale.edu/catalog/11874995.