APA (7th ed.) Citation

Averbach, B., & Chein, O. (1980). Mathematics: Problem solving through recreational mathematics. W.H. Freeman.

Chicago Style (17th ed.) Citation

Averbach, Bonnie, and Orin Chein. Mathematics: Problem Solving Through Recreational Mathematics. San Francisco: W.H. Freeman, 1980.

MLA (9th ed.) Citation

Averbach, Bonnie, and Orin Chein. Mathematics: Problem Solving Through Recreational Mathematics. W.H. Freeman, 1980.

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