MLA

Kissinger, Henry, 1923-2023. Schedule. Box 365, folder 6. 1976 March. https://collections.library.yale.edu/catalog/11775458.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 365, folder 6"])(1976 March)[Schedule]. https://collections.library.yale.edu/catalog/11775458.