Ibrahim, M.H., Jahi, J.M. and Hadi, A.S. 2013. Variasi Rentasan Suhudi Bandaraya Ipoh, Perak, Malaysia: Temperature Variations in Ipoh City, Perak, Malaysia. Perspektif Jurnal Sains Sosial dan Kemanusiaan. 5, 3 (Dec. 2013), 80–91.