Dyfyniad APA
Collier, P. (2008). The bottom: Why the poorest countries are failing and what can be done about it (ed.). Oxford University Press.
Dyfyniad Arddull Chicago
Collier, Paul. The Bottom: Why the Poorest Countries Are Failing and What Can Be Done About It. ed. Oxford: Oxford University Press, 2008.
Dyfyniad MLA
Collier, Paul. The Bottom: Why the Poorest Countries Are Failing and What Can Be Done About It. ed. Oxford University Press, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.