APA aipamena

Kavalsky, B. (1978). Portugal. The World Bank.

Chicago Style aipamena

Kavalsky, Basil. Portugal. The World Bank, 1978.

MLA aipamena

Kavalsky, Basil. Portugal. The World Bank, 1978.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.