APA (7th ed.) Citation

Clark, G. (1961). World prehistory: In new perspective (3rd ed.). C.U. Pr..

Chicago Style (17th ed.) Citation

Clark, Grahame. World Prehistory: In New Perspective. 3rd ed. Cambridge: C.U. Pr., 1961.

MLA (9th ed.) Citation

Clark, Grahame. World Prehistory: In New Perspective. 3rd ed. C.U. Pr., 1961.