MLA

Kissinger, Henry, 1923-2023. "After Cuba: Trends of JFK Foreign Policy and Republican Opportunities 1963-64" by June Goldthwait. Box 177, folder 23. 1963 February. https://collections.library.yale.edu/catalog/11785421.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 177, folder 23"])(1963 February)["After Cuba: Trends of JFK Foreign Policy and Republican Opportunities 1963-64" by June Goldthwait]. https://collections.library.yale.edu/catalog/11785421.