MLA

Kissinger, Henry, 1923-2023. Interview with Roger Koppel, "Leidenschaft furs Sachliche," Die Welt, Dec 27, 2005. Box 750, folder 5. 2005. https://collections.library.yale.edu/catalog/11782197.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 750, folder 5"])(2005)[Interview with Roger Koppel, "Leidenschaft furs Sachliche," Die Welt, Dec 27, 2005]. https://collections.library.yale.edu/catalog/11782197.