MLA

Kissinger, Henry, 1923-2023. Yale University. Box 64, folder 9. 1958-1966. https://collections.library.yale.edu/catalog/11783647.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 64, folder 9"])(1958-1966)[Yale University]. https://collections.library.yale.edu/catalog/11783647.