Mahmood, Malik Ridhuan, Fairiz Miza Yop Zain, Mohamad Tajudin Saidin, Mohd Firdaus Zainuddin, and Edelin Hussein. 2024. “CRITICAL CHALLENGES IMPLEMENTATION OF 3D PRINTING TOWARD INDUSTRY REVOLUTION (IR) 4.0: FROM CONTRACTOR PERSPECTIVE”. Journal of Islamic, Social, Economics and Development 9 (66):351-62. https://academicinspired.com/jised/article/view/2531.