APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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