Suntusia, S., Dafik, D. and Hobri, H. (2021) “THE LEVEL OF CRITICAL THINKING SKILL ON SOLVING TWO-DIMENSIONAL ARITHMETICS PROBLEMS THROUGH RESEARCH-BASED LEARNING”, Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika, 3(1), pp. 55-69. doi: 10.35316/alifmatika.2021.v3i1.55-69.