Shiang, W.F., Hashim, M. and Nayan, N. 2018. Tahap Kualiti Air Tasik Bekas Lombong Bijih Timah Untuk Aktiviti Rekreasi Air di Bandaraya Ipoh, Perak: Water Quality Level of Former Tin Mining Lakes for Water-based Recreation in the Ipoh City, Perak. GEOGRAFI. 6, 2 (Oct. 2018), 8–20.