SITANGGANG , Diana Parasian; MUNTHE, Bangun; SILALAHI, Jojor. The Effect of Providing Reinforcement on Students’ Learning Motivation in Christian Religious Education Subjects Class IX of Talitakum Medan Private Junior High School. Innovative: Journal Of Social Science Research, [S. l.], v. 3, n. 4, p. 9884–9899, 2023. Disponível em: https://j-innovative.org/index.php/Innovative/article/view/4748. Acesso em: 10 jun. 2026.