SHIHABELDIN ELAWAD ABDELHADI. Assessment of Procurement Function Significance in Value Chain Model. Global Journal of Management and Business Research, [S. l.], v. 17, n. A1, p. 29–33, 2017. Disponível em: https://journalofbusiness.org/index.php/GJMBR/article/view/2181. Acesso em: 6 may. 2024.