APA (7th ed.) Citation

Halstead, L. B., & Caselli, G. (1975). The Evolution and ecology of the dinosaurs. Derrydale Books.

Chicago Style (17th ed.) Citation

Halstead, Lambert B., and Giovanni Caselli. The Evolution and Ecology of the Dinosaurs. New York: Derrydale Books, 1975.

MLA (9th ed.) Citation

Halstead, Lambert B., and Giovanni Caselli. The Evolution and Ecology of the Dinosaurs. Derrydale Books, 1975.