MLA

Kissinger, Henry, 1923-2023. Scha-Schn. Box 112, folder 3. 2005. https://collections.library.yale.edu/catalog/12479574.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 112, folder 3"])(2005)[Scha-Schn]. https://collections.library.yale.edu/catalog/12479574.