Citazione Stile APA (7a Edizione)
Collier, P. (2007). The bottom billion: Why the poorest countries are failing and what can be done about it. Oxford University Press.
Citazione stile Chigago Style (17a edizione)
Collier, Paul. The Bottom Billion: Why the Poorest Countries Are Failing and What Can Be Done About It. Oxford ; New York: Oxford University Press, 2007.
Citatione MLA (9a ed.)
Collier, Paul. The Bottom Billion: Why the Poorest Countries Are Failing and What Can Be Done About It. Oxford University Press, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.