Ibrahim, Mohd Hairy, Jamaluddin Md Jahi, and Abd Samad Hadi. 2013. “Variasi Rentasan Suhudi Bandaraya Ipoh, Perak, Malaysia: Temperature Variations in Ipoh City, Perak, Malaysia”. Perspektif Jurnal Sains Sosial Dan Kemanusiaan 5 (3):80-91. https://ejournal.upsi.edu.my/index.php/PERS/article/view/1648.