MLA

Kissinger, Henry, 1923-2023. Li. Box 51, folder 6. 2002. https://collections.library.yale.edu/catalog/12482225.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 51, folder 6"])(2002)[Li]. https://collections.library.yale.edu/catalog/12482225.