Zendrato, Ester, 		Barus, Maria, AND 		Siahaan, Thersia.
" PENGARUH MODEL PROBLEM BASED LEARNING (PBL)TERHADAP HASIL BELAJAR PPKn SISWA KELAS III" <em>Jurnal Teknologi Mesin UDA</em> [Online], Volume 2 Number 2 (25 February 2025)