Herlina. UPAYA PENINGKATAN HASIL DAN MOTIVASI BELAJAR IPS MELALUI MODEL PEMBELAJARAN PROBLEM BASED LEARNING (PBL). JIPSI [Internet]. 2022 Dec. 31 [cited 2026 Jul. 18];1(4):460-4. Available from: https://putrapublisher.org/index.php/jipsi/article/view/95