ISA, R. B.; ABEKU, D. M. Procurement Systems and Contract Pricing Methodsin the Construction Industry: Perspective of Contractors in Kaduna Metropolis, Nigeria. International Journal of Creativity and Technical Development (IJCTD), [S. l.], v. 3, n. 2, p. 1–12, 2019. Disponível em: http://icidr.org.ng/index.php/Ijctd/article/view/712. Acesso em: 19 sep. 2024.