rahayu, indira kartika. “PENERAPAN MODEL PROBLEM BASED INSTRUCTRION TERHADAP KEMAMPUAN BERPIKIR KRITIS PADA MATERI PEMANASAN GLOBAL”. Jurnal BIOEDUIN 7, no. 2 (August 31, 2018): 26–38. Accessed May 25, 2025. http://103.55.33.27/index.php/bioeduin/article/view/3146.