APA
Ravallion M., World Bank, . (2009). The developing world's bulging (but vulnerable) middle clas. Washington: World Bank.
Chicago
Ravallion Martin, World Bank, . 2009. The developing world's bulging (but vulnerable) middle clas. Washington: World Bank.
Harvard
Ravallion M., World Bank, . (2009). The developing world's bulging (but vulnerable) middle clas. Washington: World Bank.
MLA
Ravallion Martin, World Bank, . The developing world's bulging (but vulnerable) middle clas. Washington: World Bank. 2009.