APA (7th ed.) Zitazioa
(2019). Global Sustainability. Cambridge University Press.
Chicago Style (17th ed.) Zitazioa
Global Sustainability. Cambridge University Press, 2019.
MLA (9th ed.) Zitazioa
Global Sustainability. Cambridge University Press, 2019.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.