LAKSANA, P. K.; SUROSO, A. . Cost Estimation Analysis Based on Construction Management, Value Engineering, and Lean Six Sigma for Cost Efficiency Improvement in Coal Transportation Road Projects. Eduvest - Journal of Universal Studies, [S. l.], v. 5, n. 6, p. 6248–6262, 2025. DOI: 10.59188/eduvest.v5i6.50253. Disponível em: http://eduvest.greenvest.co.id/index.php/edv/article/view/50253. Acesso em: 20 jun. 2025.