Cahyono, C., Mulyana, D. ., Sukarliana, L. ., & Puspitasari, D. . (2022). Analisis implementasi model pembelajaran Problem Based Learning dalam menumbuhkan keterampilan mengemukakan pendapat pada proses pembelajaran : Analysis of the Problem Based Learning models implementation in developing express opinion skills on the learning process . Jurnal Ilmiah Mimbar Demokrasi, 21(2), 87–92. https://doi.org/10.21009/jimd.v21i2.25855