Cita APA (7th ed.)

West, W. M., & West, R. (1934). The story of man's early progress (New ed.). Allyn and Bacon.

Cita Chicago (17th ed.)

West, Willis Mason, i Ruth West. The Story of Man's Early Progress. New ed. Boston: Allyn and Bacon, 1934.

Cita MLA (9th ed.)

West, Willis Mason, i Ruth West. The Story of Man's Early Progress. New ed. Allyn and Bacon, 1934.