SIREGAR, ROMA MINDO. TIPE GROUP INVESTIGATION (GI) PADA MATERI MAKRO MOLEKUL (POLIMER). Jurnal Ilmu Pendidikan Indonesia, [S. l.], v. 7, n. 2, p. 94–99, 2019. DOI: 10.31957/jipi.v7i2.977. Disponível em: https://mail.ejournal.uncen.ac.id/index.php/JIPI/article/view/977. Acesso em: 5 aug. 2025.