Yee, Tan Pei, and Hairul Nizam Ismail. “A Review of Distance Decay Research Trends in Tourism from 2000-2020”. Environment-Behaviour Proceedings Journal 5, no. 14 (July 1, 2020): 137–145. Accessed April 25, 2024. https://ebpj.e-iph.co.uk/index.php/EBProceedings/article/view/2275.