Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (8ú heag.)

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

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