Gaya APA

P, H, I. (2020). PSYCHOLOGY OF PROBLEM SOLVING, THE: THE BACKGROUND TO SUCCESSFUL MATHEMATICS THINKING . : World Scientific Publishing Co.

Gaya MLA

P, HERMAN, IRVING. "PSYCHOLOGY OF PROBLEM SOLVING, THE: THE BACKGROUND TO SUCCESSFUL MATHEMATICS THINKING". : World Scientific Publishing Co, 2020. S2-Pendidikan Bahasa Arab.