MLA

Kissinger, Henry, 1923-2023. Civil procedure notes. Box 74, folder 5. Circa 1953-circa 1954. https://collections.library.yale.edu/catalog/11783811.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 74, folder 5"])(Circa 1953-circa 1954)[Civil procedure notes]. https://collections.library.yale.edu/catalog/11783811.