Purnamasari NND, Anwar YAS, Junaidi E. Development of PjBL-STEM-Based E-Worksheet on the Topic of Acids and Bases. Chem.Educ.Pract [Internet]. 2025 May 31 [cited 2025 Jun. 7];8(1):49-55. Available from: http://jurnalfkip.unram.ac.id/index.php/CEP/article/view/8597