MLA

Kissinger, Henry, 1923-2023. Bertelsmann Stiftung. Undated, circa 1954-circa 2002. https://collections.library.yale.edu/catalog/11777089.

APA, 6th edition

Kissinger, Henry, 1923-2023. (Undated, circa 1954-circa 2002)[Bertelsmann Stiftung]. https://collections.library.yale.edu/catalog/11777089.