APA aipamena

The World Bank. (2005). Little data book 2005. Washington: The World Bank.

Chicago Style aipamena

The World Bank. Little Data Book 2005. Washington: The World Bank, 2005.

MLA aipamena

The World Bank. Little Data Book 2005. Washington: The World Bank, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.