RINGO, Indah Kristiani Siringo; AMINATUN, Tien; WILUJENG, Insih; NUROHMAN, Sabar. Electronic Worksheet-Based Problem Based-Learning (PBL) Toward Problem-Solving in Science Education: Need Analysis. Jurnal Penelitian Pendidikan IPA, [S. l.], v. 9, n. 1, p. 299–304, 2023. DOI: 10.29303/jppipa.v9i1.2579. Disponível em: https://jppipa.unram.ac.id/index.php/jppipa/article/view/2579. Acesso em: 2 may. 2024.