Yuliandriati, Y., Susilawati, S., & Rozalinda, R. (2019). PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK BERBASIS PROBLEM BASED LEARNING PADA MATERI IKATAN KIMIA KELAS X. JTK (Jurnal Tadris Kimiya), 4(1), 105–120. https://doi.org/10.15575/jtk.v4i1.4231