APA
Porto G., World Bank, . (2004). Informal export barriers and poverty. Washington, D. C: World Bank.
Chicago
Porto Guido, World Bank, . 2004. Informal export barriers and poverty. Washington, D. C: World Bank.
Harvard
Porto G., World Bank, . (2004). Informal export barriers and poverty. Washington, D. C: World Bank.
MLA
Porto Guido, World Bank, . Informal export barriers and poverty. Washington, D. C: World Bank. 2004.