MLA

Kissinger, Henry, 1923-2023. Dasgupta, Sugata. Box 16, folder 4. 1966-1968. https://collections.library.yale.edu/catalog/11782575.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 16, folder 4"])(1966-1968)[Dasgupta, Sugata]. https://collections.library.yale.edu/catalog/11782575.