APA (7th ed.) Citation

Krensky, S., & Sullivan, S. (1991). Who really discovered America? Hastings House.

Chicago Style (17th ed.) Citation

Krensky, Stephen, and Steve Sullivan. Who Really Discovered America? New York: Hastings House, 1991.

MLA (9th ed.) Citation

Krensky, Stephen, and Steve Sullivan. Who Really Discovered America? Hastings House, 1991.