Mulbasari, A., M. Marhamah, and R. Robiyatun. “PENGEMBANGAN LKPD BERBASIS PROBLEM BASED LEARNING (PBL) PADA MATERI PROGRAM LINEAR”. Jurnal Pendidikan Matematika Unpatti, Vol. 2, no. 2, Aug. 2021, pp. 28-34, doi:10.30598/jpmunpatti.v2.i2.p28-34.