MLA

Kissinger, Henry, 1923-2023. de Jouvenel, Bertrand. Box 16, folder 14. 1959-1960. https://collections.library.yale.edu/catalog/11782585.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 16, folder 14"])(1959-1960)[de Jouvenel, Bertrand]. https://collections.library.yale.edu/catalog/11782585.