APA aipamena

The World Bank. (2000). Trade blocs. Washington, D. C: The World Bank.

Chicago Style aipamena

The World Bank. Trade Blocs. Washington, D. C: The World Bank, 2000.

MLA aipamena

The World Bank. Trade Blocs. Washington, D. C: The World Bank, 2000.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.