MLA

Kissinger, Henry, 1923-2023. Teller, Edward. Box 58, folder 18. 1961-1967, undated. https://collections.library.yale.edu/catalog/11783515.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 58, folder 18"])(1961-1967, undated)[Teller, Edward]. https://collections.library.yale.edu/catalog/11783515.