OKEREKE, Joy. IMPACT OF VARIATION ON COST PERFORMANCE OF BUILDING CONSTRUCTION PROJECTS IN NKANU-WEST LGA, ENUGU STATE. Advanced Journal of Environmental Sciences (AJES), [S. l.], v. 15, n. 6, p. 14–28, 2024. DOI: 10.5281/zenodo.12569663. Disponível em: https://zapjournals.com/Journals/index.php/ajes/article/view/1987. Acesso em: 27 jun. 2025.