APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

Colton, Joel. Twentieth Century. Time-Life Books, 1980.

Warning: These citations may not always be 100% accurate.