Candra, Clarrissa Winata, and Calista. “Building Employee Work Effectiveness Through Competence And Communication: A Study Of Cv Sejahtera Sukses Gemilang Medan”. Journal of Creative Power and Ambition (JCPA) 4, no. 02 (July 19, 2026): 738–748. Accessed September 13, 2026. https://edujavare.com/index.php/jcpa/article/view/1709.