MLA

Kissinger, Henry, 1923-2023. General. Box 131, folder 2. 1967. https://collections.library.yale.edu/catalog/11784649.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 131, folder 2"])(1967)[General]. https://collections.library.yale.edu/catalog/11784649.