APA aipamena

World Bank. (1998). World Bank atlas, 1998 ([30th ed.].). World Bank.

Chicago Style aipamena

World Bank. World Bank Atlas, 1998. [30th ed.]. Washington, D.C.: World Bank, 1998.

MLA aipamena

World Bank. World Bank Atlas, 1998. [30th ed.]. World Bank, 1998.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.