APA (7th ed.) Citation

Head,John G. (1989). The ages of earth: Death of the dinosaurs. Cherrytree press ltd..

Chicago Style (17th ed.) Citation

Head,John G. The Ages of Earth: Death of the Dinosaurs. Unknow: Cherrytree press ltd., 1989.

MLA (9th ed.) Citation

Head,John G. The Ages of Earth: Death of the Dinosaurs. Cherrytree press ltd., 1989.

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