MLA

Kissinger, Henry, 1923-2023. V. Box 558, folder 9. 1986-1987. https://collections.library.yale.edu/catalog/11779542.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 558, folder 9"])(1986-1987)[V]. https://collections.library.yale.edu/catalog/11779542.