Initiativkreis Ruhrgebiet
MLA
Kissinger, Henry, 1923-2023. Initiativkreis Ruhrgebiet. Box 777, folder 21. 1990. https://collections.library.yale.edu/catalog/11776810.
APA, 6th edition
Kissinger, Henry, 1923-2023. (["Box 777, folder 21"])(1990)[Initiativkreis Ruhrgebiet]. https://collections.library.yale.edu/catalog/11776810.