MLA

Kissinger, Henry, 1923-2023. Na. Box 444, folder 2. 1980-1981. https://collections.library.yale.edu/catalog/11777889.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 444, folder 2"])(1980-1981)[Na]. https://collections.library.yale.edu/catalog/11777889.