APA (7th ed.) Citation

Arnold, C., & Hewett, R. (1987). Trapped in tar: Fossils from the Ice Age. Clarion Books.

Chicago Style (17th ed.) Citation

Arnold, Caroline, and Richard Hewett. Trapped in Tar: Fossils from the Ice Age. New York: Clarion Books, 1987.

MLA (9th ed.) Citation

Arnold, Caroline, and Richard Hewett. Trapped in Tar: Fossils from the Ice Age. Clarion Books, 1987.