MLA

Kissinger, Henry, 1923-2023. Váli, Ferenc. Box 258, folder 3. 1964-1965. https://collections.library.yale.edu/catalog/11786709.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 258, folder 3"])(1964-1965)[Váli, Ferenc]. https://collections.library.yale.edu/catalog/11786709.