APA (7th ed.) Citation

Helfer, R., & Lewin, T. (2006). The world's greatest elephant. Philomel Books.

Chicago Style (17th ed.) Citation

Helfer, Ralph, and Ted Lewin. The World's Greatest Elephant. New York: Philomel Books, 2006.

MLA (8th ed.) Citation

Helfer, Ralph, and Ted Lewin. The World's Greatest Elephant. Philomel Books, 2006.

Warning: These citations may not always be 100% accurate.