APA (7th ed.) Citation

Clark, C., & Campion, G. (1992). My first book of dinosaurs and other prehistoric animals. Brown Watson.

Chicago Style (17th ed.) Citation

Clark, Colin, and Geoff Campion. My First Book of Dinosaurs and Other Prehistoric Animals. England: Brown Watson, 1992.

MLA (9th ed.) Citation

Clark, Colin, and Geoff Campion. My First Book of Dinosaurs and Other Prehistoric Animals. Brown Watson, 1992.