Hawken, P. (1993). The ecology of commerce: How business can save the planet. London: Weidenfeld & Nicolson.
Chicago Style (17. basım) AtıfHawken, Paul. The Ecology of Commerce: How Business Can Save the Planet. London: Weidenfeld & Nicolson, 1993.
MLA (8th ed.) AtıfHawken, Paul. The Ecology of Commerce: How Business Can Save the Planet. London: Weidenfeld & Nicolson, 1993.
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