Sonny Rohimat. “Experiment-Based Learning in The Topic of Natural Acid-Base Indicators During A Limited Face-to-Face Learning Process”. Indonesian Journal of Mathematics and Natural Science Education 3, no. 1 (June 30, 2022): 43–52. Accessed July 17, 2025. https://mass.uinkhas.ac.id/index.php/mass/article/view/86.