Dyfyniad APA

The World Bank (WB). (2008). Doing business 2009: Comparing regulation in 181 economies. Washington: World Bank.

Dyfyniad Arddull Chicago

The World Bank (WB). Doing Business 2009: Comparing Regulation in 181 Economies. Washington: World Bank, 2008.

Dyfyniad MLA

The World Bank (WB). Doing Business 2009: Comparing Regulation in 181 Economies. Washington: World Bank, 2008.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.