Nasution OB, Lestiyani NS, Marhadi M. Championing behavior and employee performance: The role of transformational leadership, work environment, and job stress. J. Fokus Manaj. Bisnis. [Internet]. 2026Jun.1 [cited 2026Jun.5];16(1):325-4. Available from: http://journal2.uad.ac.id/index.php/fokus/article/view/15499