APA aipamena

The World Bank. (2009). The little green data book 2009. Washington, DC: The World Bank.

Chicago Style aipamena

The World Bank. The Little Green Data Book 2009. Washington, DC: The World Bank, 2009.

MLA aipamena

The World Bank. The Little Green Data Book 2009. Washington, DC: The World Bank, 2009.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.