MLA

Kissinger, Henry, 1923-2023. Latin American summary. Box 189, folder 4. 1961 August. https://collections.library.yale.edu/catalog/11785624.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 189, folder 4"])(1961 August)[Latin American summary]. https://collections.library.yale.edu/catalog/11785624.