Per
MLA
Kissinger, Henry, 1923-2023. Per. Box 467, folder 15. 1984-1985. https://collections.library.yale.edu/catalog/11778177.
APA, 6th edition
Kissinger, Henry, 1923-2023. (["Box 467, folder 15"])(1984-1985)[Per]. https://collections.library.yale.edu/catalog/11778177.