APA (7th ed.) Citation

Weizsäcker, E. U. v., Lovins, A. B., & Lovins, L. H. (1997). Factor four: Doubling wealth, halving resource use : the new report to the Club of Rome. Earthscan.

Chicago Style (17th ed.) Citation

Weizsäcker, Ernst U. von, Amory B. Lovins, and L. Hunter Lovins. Factor Four: Doubling Wealth, Halving Resource Use : The New Report to the Club of Rome. London: Earthscan, 1997.

MLA (9th ed.) Citation

Weizsäcker, Ernst U. von, et al. Factor Four: Doubling Wealth, Halving Resource Use : The New Report to the Club of Rome. Earthscan, 1997.