(1)
Manalu, S. .; Setiawan, D.; Saragi, D. . THE EFFECT OF HEURISTIC STRATEGIES AND CRITICAL THINKING ABILITY ON STUDENT LEARNING OUTCOMES OF THE VALUES OF PANCASILA ON PPKN SUBJECTS CLASS VI SD SWASTA HKBP 2 SIDORAME, MEDAN. SIJEL 2021, 1, 543-557.