Ambarwati, Nova Florentina, dan Dyan Wulan Sari HS. “Implementation of Character Education Using the Discovery Learning Learning Model at SMP Swasta St. Petrus Medan”. Jurnal Pelayanan Dan Pemberdayaan Masyarakat, vol. 1, no. 01, Agustus 2024, hlm. 20-27, doi:10.1395.vol1iss1no04pp20.