SMALLWOOD, J.; NCUNYANA, N.; EMUZE, F. Preferential procurement in the public sector: The case of Amathole. Acta Structilia, [S. l.], v. 18, n. 2, p. 64–79, 2012. Disponível em: https://www.ajol.info/index.php/actas/article/view/77180. Acesso em: 6 may. 2024.