JULIANSYAH, J. Expert System Diagnosing Escherichia Coli (E-Coli) Bacteria in Refill Drinking Water with Certainty Factor Method. International Journal of Basic and Applied Science, [S. l.], v. 10, n. 1, p. 24–27, 2021. DOI: 10.35335/ijobas.v10i1.5. Disponível em: https://ijobas.pelnus.ac.id/index.php/ijobas/article/view/5. Acesso em: 26 may. 2026.