Sazarina Mohd Sazali, et al. “CHALLENGES AND OPPORTUNITIES TOWARDS INDUSTRIAL REVOLUTION 4.0 (IR 4.0) AMONG CONTRACTORS IN MALAYSIA CONSTRUCTION INDUSTRY”. Jurnal Penyelidikan Sains Sosial, vol. 5, no. 17, Dec. 2022, https://academicinspired.com/jossr/article/view/2231.