APA Style

Vaughan, J., Gibbons, T. (1993). Looking At... Triceratops: A Dinosaur From The Cretaceous Period . USA: Gareth Stevens Publishing.

MLA Style

Vaughan, Jenny., Gibbons, Tony. "Looking At... Triceratops: A Dinosaur From The Cretaceous Period". USA: Gareth Stevens Publishing, 1993. Text.