MLA

Kissinger, Henry, 1923-2023. "America at the Apex," Chapter 1 excerpt of Does America Need a Foreign Policy?, National Interest, summer 2001. Box 738, folder 21. 2001. https://collections.library.yale.edu/catalog/11782034.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 738, folder 21"])(2001)["America at the Apex," Chapter 1 excerpt of Does America Need a Foreign Policy?, National Interest, summer 2001]. https://collections.library.yale.edu/catalog/11782034.