APA (7th ed.) Citation

Thomas, G., & Morgan Witts, M. (1970). The day the world ended. Ballantine Books.

Chicago Style (17th ed.) Citation

Thomas, Gordon, and Max Morgan Witts. The Day the World Ended. New York: Ballantine Books, 1970.

MLA (9th ed.) Citation

Thomas, Gordon, and Max Morgan Witts. The Day the World Ended. Ballantine Books, 1970.

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