APA (7th ed.) Citation

Lobel, A., & Lobel, A. (2009). The frogs and toads all sang. HarperCollinsPublishers.

Chicago Style (17th ed.) Citation

Lobel, Arnold, and Adrianne Lobel. The Frogs and Toads All Sang. New York: HarperCollinsPublishers, 2009.

MLA (8th ed.) Citation

Lobel, Arnold, and Adrianne Lobel. The Frogs and Toads All Sang. HarperCollinsPublishers, 2009.

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