MLA

Kissinger, Henry, 1923-2023. Monday lunch group. Box 126, folder 9. 1966-1967. https://collections.library.yale.edu/catalog/11784552.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 126, folder 9"])(1966-1967)[Monday lunch group]. https://collections.library.yale.edu/catalog/11784552.