“Airport Management System: Human Resources 3(Time Et al., Shift and Scheduling, Claims and Reimbursement): Vol. 5, No. 1”. 2024. Ascendens Asia Singapore – Bestlink College of the Philippines Journal of Multidisciplinary Research 5 (1). https://ojs.aaresearchindex.com/index.php/aasgbcpjmra/article/view/14364.