1.
Musthofa S, Prasetyo K, Purnomo NH. Problem-Based Learning Effects on Students Learning Outcomes in the Themes of The Potential and Utilization of Natural Resources. IJSS [Internet]. 2019Nov.4 [cited 2024Apr.29];2(2):95-101. Available from: https://journal.unesa.ac.id/index.php/jpips/article/view/5291