MLA

Kissinger, Henry, 1923-2023. Schedule. Box 363, folder 6. 1972 December-1973 June. https://collections.library.yale.edu/catalog/11775442.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 363, folder 6"])(1972 December-1973 June)[Schedule]. https://collections.library.yale.edu/catalog/11775442.