Rahayu, S., Sapri, J. and Alexon, A. (2017) “THE IMPLEMENTATION OF PROBLEM BASED LEARNING (PBL) FOR IMPROVING CRITICAL THINKING AND STUDENT’S ACHIEVEMENT”, Diadik: Jurnal Ilmiah Teknologi Pendidikan, 7(2), pp. 98–110. doi: 10.33369/diadik.v7i2.3688.