BOLA, O. A. Challenges of manpower in nursing. Discovery and Innovation, [S. l.], v. 17, n. 2, p. 44–47, 2006. DOI: 10.4314/dai.v17i2.15702. Disponível em: https://www.ajol.info/index.php/dai/article/view/15702. Acesso em: 30 aug. 2026.