et.al, Mohamad Rosni Othman. “Malaysia Seaport Development towards Embracing Industrial Revolution 4.0: Enhancing the Quality and Competitiveness of Seaport Industry”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 3, Apr. 2021, pp. 1625-3, https://turcomat.org/index.php/turkbilmat/article/view/981.