Yustinaningrum, Bettri. “MODEL PEMBELAJARAN MATEMATIKA ABAD 21 (KAJIAN MODEL PROJECT BASED LEARNING)”. Jurnal Sinektik 2, no. 1 (December 3, 2019): 48–63. Accessed January 18, 2026. https://ejurnal.unisri.ac.id/index.php/sin/article/view/3019.