MLA

Kissinger, Henry, 1923-2023. Correspondence. Box 274, folder 6. 1957 June-November. https://collections.library.yale.edu/catalog/11786905.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 274, folder 6"])(1957 June-November)[Correspondence]. https://collections.library.yale.edu/catalog/11786905.