MLA

Kissinger, Henry, 1923-2023. National Research Bureau. Box 44, folder 3. 1967. https://collections.library.yale.edu/catalog/11783197.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 44, folder 3"])(1967)[National Research Bureau]. https://collections.library.yale.edu/catalog/11783197.