Wijaya, W.S. et al. 2018. PENERAPAN PROBLEM BASED LEARNING BERPENDEKATAN SETS TERHADAP KETERAMPILAN BERPIKIR KRITIS SISWA. JTK (Jurnal Tadris Kimiya). 3, 1 (Jun. 2018), 94–103. DOI:https://doi.org/10.15575/jtk.v3i1.2338.