Gaya APA

Krulik, S., Rudnick, J, A. (1995). The new sourcebook for teaching reasoning and problem solving in elementary school . Boston: Allyn & Bacon.

Gaya MLA

Krulik, Stephen., Rudnick, Jesse, A.. "The new sourcebook for teaching reasoning and problem solving in elementary school". Boston: Allyn & Bacon, 1995. Text.