APA (7th ed.) Citation

Sereno, P. C., & Courtney, R. (1989). How tough was a tyrannosaurus?: Fascinating facts about dinosaurs. Grosset & Dunlap.

Chicago Style (17th ed.) Citation

Sereno, Paul C., and Richard Courtney. How Tough Was a Tyrannosaurus?: Fascinating Facts About Dinosaurs. New York: Grosset & Dunlap, 1989.

MLA (8th ed.) Citation

Sereno, Paul C., and Richard Courtney. How Tough Was a Tyrannosaurus?: Fascinating Facts About Dinosaurs. Grosset & Dunlap, 1989.

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