APA Citation

Krulik, S., & Reys, R. E. (1980). Problem solving in school mathematics. Reston, Va.: National Council of Teachers of Mathematics.

Chicago Style Citation

Krulik, Stephen, and Robert E. Reys. Problem Solving in School Mathematics. Reston, Va.: National Council of Teachers of Mathematics, 1980.

MLA Citation

Krulik, Stephen, and Robert E. Reys. Problem Solving in School Mathematics. Reston, Va.: National Council of Teachers of Mathematics, 1980.

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