Mc Michael, A. J. (1993). Planetary overload: Global enviornmental change and the heath of the human species. Press Syndicate of the University of Cambridge.
Dyfyniad Arddull ChicagoMc Michael, A. J. Planetary Overload: Global Enviornmental Change and the Heath of the Human Species. Cambridge: Press Syndicate of the University of Cambridge, 1993.
Dyfyniad MLAMc Michael, A. J. Planetary Overload: Global Enviornmental Change and the Heath of the Human Species. Press Syndicate of the University of Cambridge, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.