Citazione Stile APA (7a Edizione)

Waal, F. B. M. d. (2002). Tree of origin: What primate behavior can tell us about human social evolution (1st Harvard University Press pbk. ed.). Harvard University Press.

Citazione stile Chigago Style (17a edizione)

Waal, F. B. M. de. Tree of Origin: What Primate Behavior Can Tell Us About Human Social Evolution. 1st Harvard University Press pbk. ed. Cambridge, Mass.: Harvard University Press, 2002.

Citatione MLA (9a ed.)

Waal, F. B. M. de. Tree of Origin: What Primate Behavior Can Tell Us About Human Social Evolution. 1st Harvard University Press pbk. ed. Harvard University Press, 2002.