Dokumentuaren aipamena

APA (7th ed.) Zitazioa
ebrary, Inc. (2010). The future of the natural gas market in South East Europe. World Bank.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc. The Future of the Natural Gas Market in South East Europe. Washington, D.C.: World Bank, 2010.
MLA (9th ed.) Zitazioa
ebrary, Inc. The Future of the Natural Gas Market in South East Europe. World Bank, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.