APA (7th ed.) Citation

Hawken, P. (1993). The ecology of commerce: How business can save the planet. London: Weidenfeld & Nicolson.

Chicago Style (17th ed.) Citation

Hawken, Paul. The Ecology of Commerce: How Business Can Save the Planet. London: Weidenfeld & Nicolson, 1993.

MLA (8th ed.) Citation

Hawken, Paul. The Ecology of Commerce: How Business Can Save the Planet. London: Weidenfeld & Nicolson, 1993.