Alpya L, Elvina E, Rafika M. Human Resources Performance Improvement Through Motivation, Disipline, Work Environment, and Commitment in PT. Supra Matra Abadi PMKS Aek Nabara. Quant. Econ. Manag. Stud. [Internet]. 2022 Jul. 13 [cited 2026 Jun. 20];3(4):515-24. Available from: https://qemsjournal.org/index.php/qems/article/view/982