Lajiba, Saipul, and Yuyun Wahyuni Bahrun. “Pengaruh Model Project Based Learning Terhadap Self Confidence Peserta Didik ”. NUMERIC : Jurnal Penelitian Dan Inovasi Pendidikan Matematika, vol. 2, no. 2, July 2024, pp. 68-73, https://ojs.untika.ac.id/index.php/numeric/article/view/741.