MLA

Kissinger, Henry, 1923-2023. Czech-American discussions. Box 91, folder 10. 1966-1967. https://collections.library.yale.edu/catalog/11783994.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 91, folder 10"])(1966-1967)[Czech-American discussions]. https://collections.library.yale.edu/catalog/11783994.