MLA

Kissinger, Henry, 1923-2023. An. Box 37, folder 2. 2000-2002. https://collections.library.yale.edu/catalog/12482191.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 37, folder 2"])(2000-2002)[An]. https://collections.library.yale.edu/catalog/12482191.