MLA

Kissinger, Henry, 1923-2023. Manuscript outline about Toynbee. Box 71, folder 3. Circa 1949-circa 1950. https://collections.library.yale.edu/catalog/11783764.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 71, folder 3"])(Circa 1949-circa 1950)[Manuscript outline about Toynbee]. https://collections.library.yale.edu/catalog/11783764.