MLA

Kissinger, Henry, 1923-2023. Barr-Base. Box 38, folder 2. 2002. https://collections.library.yale.edu/catalog/12482204.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 38, folder 2"])(2002)[Barr-Base]. https://collections.library.yale.edu/catalog/12482204.