1.
Kartamiharja MR, Sopandi W, Anggraeni D. Implementation of Problem-Based Learning (PBL) Approach in Chemistry Instructional with Context of Tofu Liquid Waste Treatment. IJLTER [Internet]. 2020 May 31 [cited 2026 Jun. 9];19(5):47-7. Available from: http://www.ijlter.net/index.php/ijlter/article/view/331