APA (7th ed.) Citation

Downs, R. (1983). Books that changed the world. New American.

Chicago Style (17th ed.) Citation

Downs, Robert. Books That Changed the World. New York: New American, 1983.

MLA (9th ed.) Citation

Downs, Robert. Books That Changed the World. New American, 1983.

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