APA (7th ed.) Citation

Penny King & Warring, J. (1994). Secrets of the Sea. Hamlyn Children Book.

Chicago Style (17th ed.) Citation

Penny King and Jane Warring. Secrets of the Sea. London: Hamlyn Children Book, 1994.

MLA (9th ed.) Citation

Penny King and Jane Warring. Secrets of the Sea. Hamlyn Children Book, 1994.