Inanud, C. B., et al. “Travel and Tours Management System – Core 1 Transaction (Tour Creation and Configuration, Customer Tour Itinerary Management, Transport Booking, Hotel Reservation, Tour Looking)”. Ascendens Asia Singapore – Bestlink College of the Philippines Journal of Multidisciplinary Research, vol. 1, no. 1, Apr. 2019, https://ojs.aaresearchindex.com/index.php/aasgbcpjmra/article/view/2167.