APA (7th ed.) Citation

Sheldon. (1991). The doomsday conspiracy. Warner Books Publishers.

Chicago Style (17th ed.) Citation

Sheldon. The Doomsday Conspiracy. New York: Warner Books Publishers, 1991.

MLA (9th ed.) Citation

Sheldon. The Doomsday Conspiracy. Warner Books Publishers, 1991.

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