MLA

Kissinger, Henry, 1923-2023. Miksche, Ferdinand Otto. Box 42, folder 3. 1959-1960. https://collections.library.yale.edu/catalog/11783148.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 42, folder 3"])(1959-1960)[Miksche, Ferdinand Otto]. https://collections.library.yale.edu/catalog/11783148.