WAICHAHI , Z. M. .; MACHOKA , D. P. . DETERMINANTS OF PERFORMANCE OF THE PROCUREMENT FUNCTION IN PARASTATALS IN KENYA: A CASE STUDY OF EAST AFRICAN PORTLAND CEMENT PLC. African Journal of Emerging Issues, [S. l.], v. 1, n. 8, p. 62–79, 2019. Disponível em: https://www.ajoeijournals.org/sys/index.php/ajoei/article/view/51. Acesso em: 22 jun. 2025.