NURABDILLAH, Tito. Investasi Modal Manusia dalam Meningkatkan Produktivitas Tenaga Kerja: Studi Literatur. Indonesia Economic Journal, [S. l.], v. 2, n. 2, p. 2427–2438, 2026. DOI: 10.63822/zgtg5559. Disponível em: https://ojs.indopublishing.or.id/index.php/iej/article/view/1401. Acesso em: 25 sep. 2026.