Harahap, Raja Parmahanan, and Muhammad Irfan Nasution. 2026. “Influence Motivation, Competence and Work Environment on the Performance of Employees of the Regional Development Planning, Research and Innovation Agency of Serdang Bedagai Regency”. Economic: Journal Economic and Business 5 (2):289-95. https://doi.org/10.56495/ejeb.v5i2.1599.