CANDRA; CLARRISSA WINATA; CALISTA. Building Employee Work Effectiveness Through Competence And Communication: A Study Of Cv Sejahtera Sukses Gemilang Medan. Journal of Creative Power and Ambition (JCPA), [S. l.], v. 4, n. 02, p. 738–748, 2026. Disponível em: https://edujavare.com/index.php/jcpa/article/view/1709. Acesso em: 13 sep. 2026.