Cita APA (7th ed.)

Clark, J. G. D., & Piggett, S. (1968). Prehistoric societies. Knopf.

Cita Chicago (17th ed.)

Clark, John Grahame Douglas, i Stuart Piggett. Prehistoric Societies. New York: Knopf, 1968.

Cita MLA (9th ed.)

Clark, John Grahame Douglas, i Stuart Piggett. Prehistoric Societies. Knopf, 1968.