1. Department of Environment, Faculty of Forestry and Environment, Universiti Putra Malaysia, Serdang, Malaysia
2. Department of Environmental Management Technology, Faculty of Environmental Technology, Abubakar Tafawa Balewa University, Bauchi, Nigeria
3. Center of Sustainable Consumption, Universiti Putra Malaysia, Serdang, Malaysia
4. Department of Urban and Regional Planning, Federal University of Technology, Minna, Nigeria