Zendrato, Ester, Maria Barus, & Thersia Monika Siahaan.
" PENGARUH MODEL PROBLEM BASED LEARNING (PBL)TERHADAP HASIL BELAJAR PPKn SISWA KELAS III." <em>Jurnal Teknologi Mesin</em> [Online], 2.2 (2025): n. pag. Web.  3 Nov. 2026