APA aipamena

League of Nations. Economic and Financial Section. Annuaire statistique international.

Chicago Style aipamena

League of Nations. Economic and Financial Section. Annuaire Statistique International. Genève.

MLA aipamena

League of Nations. Economic and Financial Section. Annuaire Statistique International.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.