Bonobo and the Atheist In Search of Humanism Among the Primates de Waal, Frans Innbundet / 2013 / Engelsk
Bonobo and the Atheist In Search of Humanism Among the Primates de Waal, Frans Heftet / 2014 / Engelsk
Good Natured The Origins of Right and Wrong in Humans and Other Animals de Waal, Frans B. M. Heftet / 1997 / Engelsk
