APA
World Bank, . (2002). The little data book, 2002. Washington,D.C: World Bank.
Chicago
World Bank, . 2002. The little data book, 2002. Washington,D.C: World Bank.
Harvard
World Bank, . (2002). The little data book, 2002. Washington,D.C: World Bank.
MLA
World Bank, . The little data book, 2002. Washington,D.C: World Bank. 2002.