Herr, T., & Johnson, K. (1994). Problem solving strategies: Crossing the river with dogs : and other mathematical adventures. Key Curriculum Press.
芝加哥风格引文Herr, Ted, 与 Ken Johnson. Problem Solving Strategies: Crossing the River with Dogs : And Other Mathematical Adventures. Berkeley, Calif.: Key Curriculum Press, 1994.
MLA引文Herr, Ted, 与 Ken Johnson. Problem Solving Strategies: Crossing the River with Dogs : And Other Mathematical Adventures. Key Curriculum Press, 1994.
警告：这些引文格式不一定是100％准确.