MARSUKI, S.; NURHADI, M.; USMAN, U. Pengaruh pendekatan contextual teaching and learning dengan model pembelajaran problem posing terhadap hasil belajar siswa pada materi hidrokarbon. Bivalen: Chemical Studies Journal, [S. l.], v. 2, n. 2, p. 34–36, 2019. DOI: 10.30872/bcsj.v2i2.313. Disponível em: https://jurnal.fkip.unmul.ac.id/index.php/bivalen/article/view/313. Acesso em: 5 dec. 2025.