McMichael. A.J. (1993). Planetary Overload: Global Envioronmental Change and the Health of the Human Species. Cambridge University Press.
Dyfyniad Arddull ChicagoMcMichael. A.J. Planetary Overload: Global Envioronmental Change and the Health of the Human Species. Cambridge: Cambridge University Press, 1993.
Dyfyniad MLAMcMichael. A.J. Planetary Overload: Global Envioronmental Change and the Health of the Human Species. Cambridge University Press, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.