Weizsacker, E. V. E. (2005). Factor four: Doubling wealth, haling resource use. Earthscan.
Stile di citazione ChicagoWeizsacker, Ernst Von Etc. Factor Four: Doubling Wealth, Haling Resource Use. London: Earthscan, 2005.
Citazione MLAWeizsacker, Ernst Von Etc. Factor Four: Doubling Wealth, Haling Resource Use. Earthscan, 2005.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.