4Bailkey, M. and J. Nasr. 2000. From Brownflelds to Greenfields: Producing Food in North American Cities. Community Food Security News. Fall 1999/Winter 2000:6.
5Fraser, Evan D. G., 2002, Urban Ecology in Bangkok Thailand: Community Participation, Urban Agriculture and Forestry, Environments, Vol. 30 no. 1, 2002.
6Smit, J., A. Ratta, and J. Nasr, 1996, Urban Agriculture: Food, Jobs, and Sustainable Cities. United Nations Development Programme (UNDP), New York,NY.