MLA

Kissinger, Henry, 1923-2023. Buzzard, Anthony. Box 11, folder 5. 1956-1957. https://collections.library.yale.edu/catalog/11782471.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 11, folder 5"])(1956-1957)[Buzzard, Anthony]. https://collections.library.yale.edu/catalog/11782471.