Mohamad E, Ishak A, Arep H. Promoting sustainable wastewater treatment operations: The role of lean practices and lean six sigma enablers. J. Mech. Eng. Sci. [Internet]. 2024 Sep. 30 [cited 2024 Dec. 22];18(3):10116-2. Available from: https://journal.ump.edu.my/jmes/article/view/10302