Berenstain, J., & Berenstain, M. (2009). The Berenstain Bears' class trip. HarperCollins Children's Books.
Chicago Style (17th ed.) CitationBerenstain, Jan, and Mike Berenstain. The Berenstain Bears' Class Trip. New York, NY: HarperCollins Children's Books, 2009.
MLA (8th ed.) CitationBerenstain, Jan, and Mike Berenstain. The Berenstain Bears' Class Trip. HarperCollins Children's Books, 2009.
Warning: These citations may not always be 100% accurate.