APA (7th ed.) Zitazioa
Organisation for Economic Co-operation and Development. (2015). Wasser und stadte: Sicherung einer nachhaltigen zukunft. Organisation for Economic Co-operation and Development.
Chicago Style (17th ed.) Zitazioa
Organisation for Economic Co-operation and Development. Wasser Und Stadte: Sicherung Einer Nachhaltigen Zukunft. Paris, [France]: Organisation for Economic Co-operation and Development, 2015.
MLA (9th ed.) Zitazioa
Organisation for Economic Co-operation and Development. Wasser Und Stadte: Sicherung Einer Nachhaltigen Zukunft. Organisation for Economic Co-operation and Development, 2015.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.