Ardrey, R. (1970). The social contract: A personal inquiry into the evolutionary sources of order and disorder. Atheneum.
Chicago-Zitierstil (17. Ausg.)Ardrey, Robert. The Social Contract: A Personal Inquiry into the Evolutionary Sources of Order and Disorder. New York: Atheneum, 1970.
MLA-Zitierstil (9. Ausg.)Ardrey, Robert. The Social Contract: A Personal Inquiry into the Evolutionary Sources of Order and Disorder. Atheneum, 1970.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.