MLA

Kissinger, Henry, 1923-2023. Telephone messages. Box 635, folder 4. 1982. https://collections.library.yale.edu/catalog/11780550.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 635, folder 4"])(1982)[Telephone messages]. https://collections.library.yale.edu/catalog/11780550.