S. Hapiziah, T. Suhery, and J. Mujamil, “PENGEMBANGAN BAHAN AJAR KIMIA MATERI LAJU REAKSI BERBASIS STEM PROBLEM-BASED LEARNING KELAS XI SMA NEGERI 1 INDRALAYA UTARA”, JPPK, vol. 2, no. 2, p. 198–211, Aug. 2018.