Putri SW, Rinaningsih R. Development of handouts on acid-base material with the sorogan learning method. J. Pijar.MIPA [Internet]. 2023 Jul. 30 [cited 2024 Nov. 22];18(4):525-31. Available from: http://jurnalfkip.unram.ac.id/index.php/JPM/article/view/5151