Safitri, Rani, et al. “PENGEMBANGAN E-MODUL POLIMER DALAM LARUTAN, PADATAN, DAN AMORF BERBASIS PROBLEM BASED LEARNING”. Jurnal Penelitian Pendidikan Kimia: Kajian Hasil Penelitian Pendidikan Kimia, vol. 11, no. 1, May 2024, pp. 26-36, https://jppk.ejournal.unsri.ac.id/index.php/jurpenkim/article/view/1008.