UN Millennium Project. Task Force on Environmental Sustainability & Melnick, D. (2005). Environment and human well-being: A practical strategy. Earthscan.
Dyfyniad Arddull ChicagoUN Millennium Project. Task Force on Environmental Sustainability and Don Melnick. Environment and Human Well-being: A Practical Strategy. London ; Sterling, Va: Earthscan, 2005.
Dyfyniad MLAUN Millennium Project. Task Force on Environmental Sustainability and Don Melnick. Environment and Human Well-being: A Practical Strategy. Earthscan, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.