MLA

Kissinger, Henry, 1923-2023. Benito Manilo Reyes. Box 224, folder 4. 1968 February-May. https://collections.library.yale.edu/catalog/11786164.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 224, folder 4"])(1968 February-May)[Benito Manilo Reyes]. https://collections.library.yale.edu/catalog/11786164.