Degracia, Aldrin Bryan, et al. “Hotel Management System - Core 2 (Booking, Reservation, Facilities Management, Customer Guest Management and Customer Relationship Management): Vol.4, No.1”. Ascendens Asia Singapore – Bestlink College of the Philippines Journal of Multidisciplinary Research, vol. 4, no. 1, June 2024, https://ojs.aaresearchindex.com/index.php/aasgbcpjmra/article/view/14203.