Yasatulo Lase, Syaifuddin, Sofiyan Matondang. The Influence Of Leadership And Work Environment On Staff Performance At PT Permodalan Nasional Madani (Pnm) Siantar Branch. ISBN [Internet]. 2025Feb.20 [cited 2025Feb.24];1(1). Available from: https://jurnal.unprimdn.ac.id/index.php/ISBN/article/view/6440