1. Bassey, M. (1999) Case Study Research in Educational Settings, Buckingham, PA: Open University Press.
2. Bowers, C.A. (2001) Educating for Eco-justice and Community, Athens, GA: University of Georgia Press.
3. Bruntland, G. (ed.) (1987) Our Common Future: The World Commission on Environment and Development, Oxford: Oxford University Press.
4. Environmental Programs Review Committee. (1997) ‘Rethinking environmental education at UBC: Report of the environmental programs review committee’, Retrieved on 12 May 2002 from
http://www.ire.ubc.ca/environment
.
5. Halifax Declaration. (1991) Retrieved on 19 March 2004 from
http://www.unesco.org/iau/sd/halifax.html
.