Chen, S., & Ravallion, M. (2004). How have the world's poorest fared since the early 1980sn. World Bank.
Cita Chicago (17th ed.)Chen, Shaohua, i Martin Ravallion. How Have the World's Poorest Fared Since the Early 1980sn. Washington, D.C: World Bank, 2004.
Cita MLA (9th ed.)Chen, Shaohua, i Martin Ravallion. How Have the World's Poorest Fared Since the Early 1980sn. World Bank, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.