KRISTIANI SIMANGUNSONG; ANDRE FITRIANO; VINTA HOTMA ROTUA MANULLANG; HENNY PRATIWI. The Influence of Competency, Communication, and Work Ethic on Employee Effectiveness at the North Sumatera Governor’s Office (Case study at the North Sumatra Governor’s Office). Indonesian Journal of Business Analytics , [S. l.], v. 6, n. 2, p. 373–390, 2026. DOI: 10.55927/ijba.v6i2.16494. Disponível em: https://journal.formosapublisher.org/index.php/ijba/article/view/16494. Acesso em: 21 jul. 2026.