Mardhiko, Arief, Zaharuddin Zaharuddin, and Supriyadi Supriyadi. “The Influence of Leadership and Co-Worker Relationships on Employee Productivity at the Main Clinical Laboratory of Siaga Medika Jakarta”. International Journal of Business, Law, and Education 6, no. 1 (February 6, 2025): 315 - 325. Accessed July 5, 2025. http://ijble.com/index.php/journal/article/view/1021.