Adli, Muhammad Tyo, dkk. “The Effect of Problem-Based Learning on Biology Achievement Grade XII-1 Students at Pakusari Senior High School”. JURNAL BIOEDUKASI, vol. 9, no. 1, Mei 2026, hlm. 784-93, https://ejournal.xternate.com/index.php/bioedu/article/view/10370.