Belia, Y., Taufan, J., & Fitra, R. R. (2024). Reducing the Negative Behavior of Children with Oppositional Defiant Disorder by Providing Reinforcement Techniques at SLBN 1 Ampek Angkek. Edumaspul: Jurnal Pendidikan, 8(1), 231-237. https://doi.org/10.33487/edumaspul.v8i1.7574