APA (7th ed.) Citation

Day, D. (1981). The doomsday book of animals: A natural history of vanished species. The Viking Press.

Chicago Style (17th ed.) Citation

Day, David. The Doomsday Book of Animals: A Natural History of Vanished Species. New York: The Viking Press, 1981.

MLA (9th ed.) Citation

Day, David. The Doomsday Book of Animals: A Natural History of Vanished Species. The Viking Press, 1981.