Ulpa A, Asiati DI, Nurrahmi M. The Effect of Leadership and Training on Employee Performance through Competency at PT Pertamina Drilling Services Project Sumatera Bagian Selatanroject Sumatera Bagian Selatan. IJMHRR [Internet]. 2024Apr.5 [cited 2026Oct.7];5(2):62 - 82. Available from: https://www.journal.jis-institute.org/index.php/ijmhrr/article/view/1728