EFFIONG, Etim Augustine; NWOKE, Prof. Herbert; UGWU, Associate Prof. Kelechi Enyinna. Assessment of impact of regulatory guidelines on procurement lead times in world bank-funded projects in Nigeria . Journal of Commerce, Management, and Tourism Studies, Indonesia, v. 4, n. 3, p. 430–449, 2025. DOI: 10.58881/jcmts.v4i3.375. Disponível em: https://ympn.co.id/index.php/JCMTS/article/view/375. Acesso em: 26 jan. 2026.