Cita APA (7th ed.)

Lucas, S. G. (1997). Dinosaurs: The textbook (2nd ed.). WCB.

Cita Chicago (17th ed.)

Lucas, Spencer G. Dinosaurs: The Textbook. 2nd ed. Boston: WCB, 1997.

Cita MLA (9th ed.)

Lucas, Spencer G. Dinosaurs: The Textbook. 2nd ed. WCB, 1997.