MLA

Kissinger, Henry, 1923-2023. " 'Prospect for America': Guide for Discussion Leaders". Box 137, folder 8. 1961. https://collections.library.yale.edu/catalog/11784762.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 137, folder 8"])(1961)[" 'Prospect for America': Guide for Discussion Leaders"]. https://collections.library.yale.edu/catalog/11784762.