MLA

Kissinger, Henry, 1923-2023. Biographical data. Box 307, folder 4. 1970 August-1971. https://collections.library.yale.edu/catalog/11774598.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 307, folder 4"])(1970 August-1971)[Biographical data]. https://collections.library.yale.edu/catalog/11774598.