Welker, M. (1987). The self-jeopardizing of human societies and Whitehead's conception of peace: Niklas Luhmann on his 60th birthday. Soundings, 52, .
Chicago-Zitierstil (17. Ausg.)Welker, Michael. "The Self-jeopardizing of Human Societies and Whitehead's Conception of Peace: Niklas Luhmann on His 60th Birthday." Soundings 52 (1987).
MLA-Zitierstil (9. Ausg.)Welker, Michael. "The Self-jeopardizing of Human Societies and Whitehead's Conception of Peace: Niklas Luhmann on His 60th Birthday." Soundings, vol. 52, 1987.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.