SYARIF, M.; TJARONGE, M. W. A Comparison of Organic Cement Made from Recycled Waste Material and Portland Cement. Engineering, Technology & Applied Science Research, Greece, v. 11, n. 4, p. 7442–7445, 2021. DOI: 10.48084/etasr.4323. Disponível em: https://etasr.com/index.php/ETASR/article/view/4323. Acesso em: 19 oct. 2021.