Ayob, N.A. et al. 2017. Kualiti Air dan Nutrien di Tanah Bencah BIOECODS, Kampus Kejuruteraan Universiti Sains Malaysia, Nibong Tebal, Pulau Pinang: Water Quality and Nutrient in BIOECODS Wetland, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Pulau Pinang. GEOGRAFI. 5, 2 (Oct. 2017), 1–12.