MLA

Miłosz, Czesław, 1911-2004. Ginsberg, Allen. Box 21, folder 345. 1986-1993. https://collections.library.yale.edu/catalog/10050471.

APA, 6th edition

Miłosz, Czesław, 1911-2004. (["Box 21, folder 345"])(1986-1993)[Ginsberg, Allen]. https://collections.library.yale.edu/catalog/10050471.