MLA

Kissinger, Henry, 1923-2023. Kissinger speaking at Southern Methodist University, Dallas [includes correspondence]. Box 224, folder 43. 2002 March 27. https://collections.library.yale.edu/catalog/12480170.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 224, folder 43"])(2002 March 27)[Kissinger speaking at Southern Methodist University, Dallas [includes correspondence]]. https://collections.library.yale.edu/catalog/12480170.