Salsabilla, Nena Monica. “Self Efficacy Pada Section Leader UKM Paduan Suara”. Character Jurnal Penelitian Psikologi 10, no. 3 (July 9, 2023): 724–743. Accessed June 25, 2025. https://ejournal.unesa.ac.id/index.php/character/article/view/54573.