Okta Pirera. Profile of Mastery of Hydrocarbon Compound Concepts in Class XI MIPA-2 Students of SMA Negeri 4 Palangka Raya for Academic Year 2018/2019. JPMIPA [Internet]. 2021 Nov. 1 [cited 2024 Nov. 23];2(2):111-20. Available from: https://e-journal.upr.ac.id/index.php/JPMIPA/article/view/5049