OLENSIA, Yeva; KURNIA SARI, Renny. POTRET CAMBRIDGE ADVANCED (CHEMISTRY AS AND A LEVEL) DI SEKOLAH MUTIARA HARAPAN RIAU TAHUN AJARAN 2015/2016. Orbital: Jurnal Pendidikan Kimia, [S. l.], v. 1, n. 1, p. 12–21, 2017. DOI: 10.19109/ojpk.v1i1.1861. Disponível em: https://jurnal.radenfatah.ac.id/index.php/orbital/article/view/1861.. Acesso em: 10 may. 2025.