منابع این پرونده: The Bonobo and The Atheist: In Search of Humanism Among the Primates by Frans de Waal Chimpanzee Politics: Power and Sex Among Apes by Frans de Waal Moral Tribes: Emotion, Reason, and The Gap Between Us and Them by Joshua Greene Survival of The Friendliest: Understanding Our Origins and Rediscovering Our Common …