APA (7th ed.) Citation

Royston, A., Shott, S., Cradock-Watson, J., & Hopkins, D. (1992). Sea animals. Little Simon.

Chicago Style (17th ed.) Citation

Royston, Angela, Stephen Shott, Jane Cradock-Watson, and Dave Hopkins. Sea Animals. New York: Little Simon, 1992.

MLA (9th ed.) Citation

Royston, Angela, et al. Sea Animals. Little Simon, 1992.