Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.