Nugraha, Rizki Nurul, and Dyah Handayani , trans. “Employee Performance Indicators at PT. Idea Indonesia Tbk”. West Science Social and Humanities Studies 2, no. 03 (March 28, 2024): 518–525. Accessed January 27, 2026. https://wsj.westsciences.com/index.php/wsshs/article/view/730.