Zarkasih , Muhamad. “A Conceptual Paper: Digital Image Processing for KPI of ‘Office Boy’ Employee”. Proceedings of the Informatics Conference 6, no. 11 (January 5, 2021): 14-22. Accessed April 27, 2024. https://ojs.journals.unisel.edu.my/index.php/icf/article/view/78.