MLA

Kissinger, Henry, 1923-2023. Ferrero-Waldner, Benita speaking with Kissinger [includes correspondence]. Box 226, folder 3. 2003 September 26. https://collections.library.yale.edu/catalog/12480191.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 226, folder 3"])(2003 September 26)[Ferrero-Waldner, Benita speaking with Kissinger [includes correspondence]]. https://collections.library.yale.edu/catalog/12480191.