HERAK, Rikardus. Peningkatan Hasil Belajar IPA Peserta Didik Kelas VIII Materi Sistem Ekskresi melalui Pengaruh Model STEM. Jurnal Studi Guru dan Pembelajaran, [S. l.], v. 4, n. 1, p. 127–134, 2021. DOI: 10.30605/jsgp.4.1.2021.516. Disponível em: https://www.e-journal.my.id/jsgp/article/view/516. Acesso em: 8 jul. 2025.