Setiawan T, Sriwahyuni E. Electronic Pocket Book of Algebra Concepts for Basic Chemistry Learning Stoichiometry Focus Subject. JPMIPA [Internet]. 2021 Jun. 8 [cited 2024 Nov. 22];2(1):24-32. Available from: https://e-journal.upr.ac.id/index.php/JPMIPA/article/view/2691