The Economist. (2002). E-trends.
Dyfyniad Arddull ChicagoThe Economist. E-trends. London, 2002.
Dyfyniad MLAThe Economist. E-trends. 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.
The Economist. (2002). E-trends.
Dyfyniad Arddull ChicagoThe Economist. E-trends. London, 2002.
Dyfyniad MLAThe Economist. E-trends. 2002.