Gaya APA

Krulik, S., Rudnick, J, A. (1998). Assessing reasoning and problem solving : a sourcebook for elementary school teachers . Boston: Allyn and Bacon.

Gaya MLA

Krulik, Stephen., Rudnick, Jesse, A.. "Assessing reasoning and problem solving : a sourcebook for elementary school teachers". Boston: Allyn and Bacon, 1998. Text.