Cita APA (7a ed.)

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.

Cita Chicago Style (17a 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. Cambridge (Massachusetts) [etc.]: Harvard University Press, 2002.

Cita 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.