Zulfani Sesmiarni,Ridha Ahida, Novi Hendri. “Information Technology Services in Preparing for Industrial Era 4.0”. International Journal of Advanced Science and Technology 29, no. 5s (April 4, 2020): 845 - 851. Accessed April 27, 2024. http://sersc.org/journals/index.php/IJAST/article/view/7764.