K.- ghee Tiew, K. Watanabe, N. E. Ahmad Basri, S. Md. Zain, and H. Basri, “Level of Recycling Awareness and Responses to On-campus Recycling Facilities: Case Study-Universiti Kebangsaan Malaysia Students”, JCEST, vol. 4, no. 1, pp. 1-7, Apr. 2013.