Annas, Firdaus. “Optimizing Futsal Field Reservation Through FCFS Queueing Algorithm in a Web-Based Booking Platform”. Knowbase : International Journal of Knowledge in Database, vol. 3, no. 2, Dec. 2023, pp. 177-90, https://ejournal.uinbukittinggi.ac.id/index.php/ijokid/article/view/10485.