MLA

Kissinger, Henry, 1923-2023. Scha-Schm. Box 529, folder 4. 1995. https://collections.library.yale.edu/catalog/11779067.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 529, folder 4"])(1995)[Scha-Schm]. https://collections.library.yale.edu/catalog/11779067.