APA (7th ed.) Citation

Time-Life Books. (1989). The Age of calamity: Time frame AD 1300-1400. Time-Life Books.

Chicago Style (17th ed.) Citation

Time-Life Books. The Age of Calamity: Time Frame AD 1300-1400. Alexandria, Va: Time-Life Books, 1989.

MLA (9th ed.) Citation

Time-Life Books. The Age of Calamity: Time Frame AD 1300-1400. Time-Life Books, 1989.

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