Nugrahani, A. 2020. UPAYA PENINGKATAN HASIL BELAJAR DENGAN MODEL PROBLEM BASED LEARNING (PBL) PADA PEMBELAJARAN IPS KELAS V SD IT BALIKPAPAN ISLAMIC SCHOOL . Prosiding Seminar Nasional PPG Universitas Mulawarman. 1, (Dec. 2020), 49-57. DOI:https://doi.org/10.30872/semnasppg.v1.695.