Sinaga, E. W. N., Siagian, A. F. and Sitio, H. (2024) “Pengaruh Model Pembelajaran Problem Based Learning (PBL) Terhadap Keterampilan Berpikir Kreatif Siswa SD Swasta HKBP Tomuan”, Innovative: Journal Of Social Science Research, 4(1), pp. 12030–12038. doi: 10.31004/innovative.v4i1.9330.