JAIYEOBA, S. Human Capital Investment and Economic Growth in Nigeria. African Research Review, [S. l.], v. 9, n. 1, p. 30–46, 2015. DOI: 10.4314/afrrev.v9i1.4. Disponível em: https://www.ajol.info/index.php/afrrev/article/view/113870. Acesso em: 4 nov. 2026.