MLA

Kissinger, Henry, 1923-2023. Bl. Box 326, folder 5. 1973-1977. https://collections.library.yale.edu/catalog/11774878.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 326, folder 5"])(1973-1977)[Bl]. https://collections.library.yale.edu/catalog/11774878.