APA (7th ed.) Citation

Johnson, K., & Herr, T. (2001). Problem solving strategies: Crossing the river with dogs and other mathematical adventures (2nd ed.). Key Curriculum Press.

Chicago Style (17th ed.) Citation

Johnson, Ken, and Ted Herr. Problem Solving Strategies: Crossing the River with Dogs and Other Mathematical Adventures. 2nd ed. Emeryville, CA: Key Curriculum Press, 2001.

MLA (9th ed.) Citation

Johnson, Ken, and Ted Herr. Problem Solving Strategies: Crossing the River with Dogs and Other Mathematical Adventures. 2nd ed. Key Curriculum Press, 2001.