Rizky CA, Mardiah M. Development of an Integrated Transaction and Payroll Information System Using the Waterfall Model: A Case Study in Small Enterprise. J. Inf. Tech. Syst. Eng. [Internet]. 2026 Apr. 20 [cited 2026 Apr. 21];1(1):33-42. Available from: https://journal.cvrkmg.com/index.php/jitse/article/view/5