Olensia Y, Kurnia Sari R. POTRET CAMBRIDGE ADVANCED (CHEMISTRY AS AND A LEVEL) DI SEKOLAH MUTIARA HARAPAN RIAU TAHUN AJARAN 2015/2016. OJPK [Internet]. 2017 Jun. 16 [cited 2025 May 10];1(1):12-21. Available from: https://jurnal.radenfatah.ac.id/index.php/orbital/article/view/1861