KatesR. (2000) ‘Sustainability science’, World Academies Conference, Transition to Sustainability in 21st Century, Tokyo, 18/5//00.
2.
NdubisiN.O. (2008) ‘Socio-environmental marketing in developing nations: A comparison of African and Asian Businesses’, Journal of Asian and African Studies, 43(3): 251-277.
3.
PorterM.van der LindeC. (1995) ‘Green and Competitive, Ending the Stalemate’, Harvard Business Review73(Sept–Oct): 120–134.