APA (7th ed.) Citation

Heller, D. (1990). Dear God, what religion were the dinosaurs?: More children's letters to God. Doubleday.

Chicago Style (17th ed.) Citation

Heller, David. Dear God, What Religion Were the Dinosaurs?: More Children's Letters to God. New York: Doubleday, 1990.

MLA (9th ed.) Citation

Heller, David. Dear God, What Religion Were the Dinosaurs?: More Children's Letters to God. Doubleday, 1990.