the World Bank. (2004). Doing Business 2004: Understanding regulation. World Bank Group.
Cita Chicago (17th ed.)the World Bank. Doing Business 2004: Understanding Regulation. Washington: World Bank Group, 2004.
Cita MLA (9th ed.)the World Bank. Doing Business 2004: Understanding Regulation. World Bank Group, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.