Lubis, A. A. and Tirtayasa, S. (2026) “Impact of Education and Training on Employee Performance at the North Sumatra Center for Teachers and Educational Personnel (BBGTK)”, Digital Business: Tren Bisnis Masa Depan, 17(2), pp. 24–31. Available at: https://ejournal.cria.or.id/index.php/db/article/view/429 (Accessed: 4 June 2026).