Dea Aprillia Simamora, Barham Siregar and Nurul Dalimunte 2025. Employee Training Efforts and Incentive Provision Towards Improving Employee Performance Through Customer Service at Kembar Ponsel Medan. Jurnal Dialektika: Jurnal Ilmu Sosial. 23, 3 (Dec. 2025), 309–326. DOI:https://doi.org/10.63309/dialektika.v23i3.839.