Astuti, Yuni, Zulbahri Zulbahri, Haripah Lawanis, Erianti Erianti, and Damrah Damrah. “Desarrollo De Modelos Conceptuales De Confianza En Uno Mismo En Cursos De Aprendizaje De Voleibol (Self-Confidence Conceptual Model Development in Volleyball Learning Courses)”. Retos 50 (September 15, 2023): 1085–1090. Accessed December 16, 2025. http://207.180.252.49/index.php/retos/article/view/100423.