?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Muhammad&rft.aulast=Kurniawan&rft.au=Kurniawan%2C+Muhammad&rft.inst=Fakultas+Ilmu+Pendidikan&rft.title=PENINGKATAN+SIKAP+PEDULI+SOSIAL+MELALUI+MODEL+PROBLEM+BASED+LEARNING+(PBL)+PADA+SISWA+KELAS+IV+SEKOLAH+DASAR&rft.degree=S1&rft.date=3+January+2022