MLA

Kissinger, Henry, 1923-2023. Young, Elizabeth and Wayland. Box 64, folder 15. 1957-1958. https://collections.library.yale.edu/catalog/11783653.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 64, folder 15"])(1957-1958)[Young, Elizabeth and Wayland]. https://collections.library.yale.edu/catalog/11783653.