IBRAHIM, Mohd Hairy. Aktiviti Antropogenik dan Kesannya Terhadap Perubahan Landskap Permukaan: Satu Kajian Observasi di Ipoh, Perak, Malaysia: Anthropogenic Activities and Their Effects on Surface Landscape: An Observation Study in Ipoh, Perak, Malaysia. Perspektif Jurnal Sains Sosial dan Kemanusiaan, [S. l.], v. 5, n. 2, p. 15–28, 2013. Disponível em: https://ejournal.upsi.edu.my/index.php/PERS/article/view/1634. Acesso em: 5 dec. 2025.