Ramury, Feli, Gustina Gustina, and Agustiany Dumeva Putri. “Pengembangan Lembar Kerja Siswa Berbasis Problem Based Learning (PBL) Pada Materi Penerapan Barisan Dan Deret”. Jurnal Pendidikan Matematika RAFA 6, no. 1 (June 28, 2020): 85–99. Accessed April 19, 2025. https://jurnal.radenfatah.ac.id/index.php/jpmrafa/article/view/5890.