Παραπομπή σε μορφή APA (7η εκδ.)

Krulik, S., & Rudnick, J. A. (1993). Reasoning and problem solving: A handbook for elementary school teachers. Allyn and Bacon.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Krulik, Stephen, και Jesse A. Rudnick. Reasoning and Problem Solving: A Handbook for Elementary School Teachers. Boston: Allyn and Bacon, 1993.

Παραπομπή σε μορφή MLA (9th εκδ.)

Krulik, Stephen, και Jesse A. Rudnick. Reasoning and Problem Solving: A Handbook for Elementary School Teachers. Allyn and Bacon, 1993.