Letchumanan, Vaani, and Rosmamalmi Mat Nawi. “The Development of VGL Catering Booking System: VGL Cate Using Object-Oriented Approach”. Applied Information Technology And Computer Science, vol. 5, no. 1, Aug. 2024, pp. 744-63, https://penerbit.uthm.edu.my/periodicals/index.php/aitcs/article/view/12387.