R. D. Hutahaean, T. Siregar, J. Siallagan, and Ortis Fredy Waromi, “DEVELOPMENT OF IPAS PROJECT E-MODULES THROUGH A PROJECT-BASED LEARNING (PJBL) APPROACH TO IMPROVE SCIENTIFIC LITERACY, ON SUBSTANCE MATERIALS AND THEIR CHANGES”, J. IPI, vol. 14, no. 1, pp. 1–11, Feb. 2026.