AL-SWAAF, D. The Range of Purchasing Managers’ Recognition to the Ethical and Professional Standards to Purchasing Job: A Pilot Study of Some Industrial Companies at Ninavah Province. TANMIYAT AL-RAFIDAIN, [S. l.], v. 30, n. 92, p. 111–129, 2008. DOI: 10.33899/tanra.2008.161728. Disponível em: https://edusj.uomosul.edu.iq/index.php/tanmiyat/article/view/29931. Acesso em: 10 sep. 2025.