Saad, Mazni, Mohd Hanafi Azman Ong, Afiza Mohamad Ali, Nusrah Samat, and Rohana Ahmad. 2020. “Moderating Work Efficiency and Performance Through Best-Practice Certification: Management’s Perspective”. International Journal of Economics, Management and Accounting 28 (1):123-40. https://journals.iium.edu.my/enmjournal/index.php/enmj/article/view/773.