MLA

Kissinger, Henry, 1923-2023. Pe. Box 508, folder 2. 1983-1989. https://collections.library.yale.edu/catalog/11778706.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 508, folder 2"])(1983-1989)[Pe]. https://collections.library.yale.edu/catalog/11778706.