Cita APA (7th ed.)

Peacock, J. L., & Kirsch, A. T. (1973). The human direction: An evolutionary approach to social and cultural anthropology (2nd ed.). Appleton-Century-Crofts.

Cita Chicago (17th ed.)

Peacock, James L., i A. Thomas Kirsch. The Human Direction: An Evolutionary Approach to Social and Cultural Anthropology. 2nd ed. New York: Appleton-Century-Crofts, 1973.

Cita MLA (9th ed.)

Peacock, James L., i A. Thomas Kirsch. The Human Direction: An Evolutionary Approach to Social and Cultural Anthropology. 2nd ed. Appleton-Century-Crofts, 1973.