Hashim, M., M. S. Y. Che Ngah, N. Nayan, and M. H. Ibrahim. “Persepsi Pelancong Terhadap Percemaran Marindi Tiga Pantai Terpilih Di Pantai TimurSemenanjung Malaysia: Tourists Perception on Level of Marine Pollutionat Three Selected Beaches in the East Coastof Peninsular Malaysia”. Perspektif Jurnal Sains Sosial Dan Kemanusiaan, vol. 2, no. 2, Nov. 2010, pp. 74-96, https://ojs.upsi.edu.my/index.php/PERS/article/view/1585.