APA (7th ed.) Citation

(1989). The age of calamity (AD 1300-1400). Time-Life Books.

Chicago Style (17th ed.) Citation

The Age of Calamity (AD 1300-1400). Armsterdam: Time-Life Books, 1989.

MLA (9th ed.) Citation

The Age of Calamity (AD 1300-1400). Time-Life Books, 1989.

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