APA (7th ed.) Citation

Arnold, C., & Hewett, R. (1991). Watch out for sharks! Clarion Books.

Chicago Style (17th ed.) Citation

Arnold, Caroline, and Richard Hewett. Watch Out for Sharks! New York: Clarion Books, 1991.

MLA (9th ed.) Citation

Arnold, Caroline, and Richard Hewett. Watch Out for Sharks! Clarion Books, 1991.