RICHARDO RISKIVERNANDO GULO dkk. Dampak Program Bimbingan Belajar Terhadap Motivasi Belajar Siswa Di Sd Negeri 14 Simbolon Purba . Jurnal Pelayanan dan Pemberdayaan Masyarakat, [S. l.], v. 1, n. 03, p. 80–87, 2024. DOI: 10.1395.vol1iss3no02pp80. Disponível em: https://ejournal.pustakakaryamandiri.com/ojs/index.php/jppm/article/view/72. Acesso em: 10 sep. 2025.