Dahlan R, M. (2019) «Social Adaptation, Self-Confidence and their Relation to Student Achievement Motivation of Madrasa Senior High School 1 Bogor Indonesia in Generating Student with Character», Opción, 350, pp. 841-863. Disponible en: https://produccioncientifica.luz.edu.ve/index.php/opcion/article/view/29670 (Accedido: 2agosto2025).