Mohamad, Effendi, A. Ishak, and H. Arep. 2024. “Promoting Sustainable Wastewater Treatment Operations: The Role of Lean Practices and Lean Six Sigma Enablers”. Journal of Mechanical Engineering and Sciences 18 (3):10116-26. https://doi.org/10.15282/jmes.18.3.2024.2.0799.