APA (7th ed.) Citation

Berenstain, S., & Berenstain, J. (1991). The Berenstain bears don't pollute (anymore). Random House.

Chicago Style (17th ed.) Citation

Berenstain, Stan, and Jan Berenstain. The Berenstain Bears Don't Pollute (anymore). New York: Random House, 1991.

MLA (9th ed.) Citation

Berenstain, Stan, and Jan Berenstain. The Berenstain Bears Don't Pollute (anymore). Random House, 1991.

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