Sjarifudin D, Tri Widyastuti, Istianingsih, Sugeng Suroso. The Effect of Self-Efficacy, Competence, Work Discipline, Employee Engagement on Work Performance and Work Motivation: Empirical Study on Umrah Travel Agency. FJSR [Internet]. 2023 Dec. 28 [cited 2026 May 16];2(12):2827-44. Available from: https://journal.formosapublisher.org/index.php/fjsr/article/view/6963