APA (7th ed.) Citation

Clark, J. G. D. (1962). World prehistory: An outline. University Press.

Chicago Style (17th ed.) Citation

Clark, John Grahame Douglas. World Prehistory: An Outline. Cambridge, England: University Press, 1962.

MLA (9th ed.) Citation

Clark, John Grahame Douglas. World Prehistory: An Outline. University Press, 1962.