MLA

Brodsky, Joseph, 1940-1996. Miłosz, Czesław, notes and transcript of audio recording. Box 122 | 2723-2729. undated. https://collections.library.yale.edu/catalog/17306164.

APA, 6th edition

Brodsky, Joseph, 1940-1996. (["Box 122 | 2723-2729"])(undated)[Miłosz, Czesław, notes and transcript of audio recording]. https://collections.library.yale.edu/catalog/17306164.