Seabright, P. (1997). Comprehensive assessment of the freshwater resources of the world : Water: Commodity or social institution? Stockholm Environment Institute.
Dyfyniad Arddull ChicagoSeabright, Paul. Comprehensive Assessment of the Freshwater Resources of the World : Water: Commodity or Social Institution? Stockholm, Sweden: Stockholm Environment Institute, 1997.
Dyfyniad MLASeabright, Paul. Comprehensive Assessment of the Freshwater Resources of the World : Water: Commodity or Social Institution? Stockholm Environment Institute, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.