APA (7th ed.) Citation

Colton, J. G. (1980). Twentieth century (Rev. ed.). Time-Life Books.

Chicago Style (17th ed.) Citation

Colton, Joel G. Twentieth Century. Rev. ed. Alexandria, Va: Time-Life Books, 1980.

MLA (9th ed.) Citation

Colton, Joel G. Twentieth Century. Rev. ed. Time-Life Books, 1980.