MLA

Kissinger, Henry, 1923-2023. Olson, Mancur. Box 46, folder 12. 1967. https://collections.library.yale.edu/catalog/11783242.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 46, folder 12"])(1967)[Olson, Mancur]. https://collections.library.yale.edu/catalog/11783242.