Hasibuan DM, Purba MR, Nasib N. The Influence Of Leadership Style, Motivation, And Work Environment On Employee Performance At Pt Jasindo Testing Services. ecotal [Internet]. 2026 May 1 [cited 2026 May 20];7(2):145-57. Available from: https://ojs.stieamkop.ac.id/index.php/ecotal/article/view/3832