MLA

Kissinger, Henry, 1923-2023. Hinman, George. Box 199, folder 24. 1967 September-1969 January. https://collections.library.yale.edu/catalog/11785843.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 199, folder 24"])(1967 September-1969 January)[Hinman, George]. https://collections.library.yale.edu/catalog/11785843.