Ong, Pei Yee, et al. “Optimizing Business Management With Electronic Customer Relationship Management Systems: A Case Study of Biotek Abadi”. Applied Information Technology And Computer Science, vol. 5, no. 2, Dec. 2024, pp. 426-45, https://publisher.uthm.edu.my/periodicals/index.php/aitcs/article/view/16262.