Rani Jawang. Effective Learning Strategies to Overcome Concentration Barriers in Tunagrahita Children at SLB Bhakti Luhur Madiun. J. Bs. Edu. R [Internet]. 2025Sep.7 [cited 2025Sep.9];6(3). Available from: https://cahaya-ic.com/index.php/JBER/article/view/2001