Salsabilla, Nena Monica, and Hermien Laksmiwati. “Self Efficacy Pada Section Leader UKM Paduan Suara”. Character Jurnal Penelitian Psikologi 10, no. 2 (July 12, 2023): 878–897. Accessed February 10, 2026. https://ejournal.unesa.ac.id/index.php/character/article/view/54591.