Collier, P., & Paul Collier. (2007). The: Why the poorest countries are failing and what can be done about it. Oxford: Oxford University Press.
Dyfyniad Arddull ChicagoCollier, Paul, và Paul Collier. The: Why the Poorest Countries Are Failing and What Can Be Done About It. Oxford: Oxford University Press, 2007.
Dyfyniad MLACollier, Paul, và Paul Collier. The: Why the Poorest Countries Are Failing and What Can Be Done About It. Oxford: Oxford University Press, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.