APA (7th ed.) Zitazioa
Collin, P. H. (2011). Dictionary of environment & ecology (5th ed.). Bloomsbury.
Chicago Style (17th ed.) Zitazioa
Collin, P. H. Dictionary of Environment & Ecology. 5th ed. London: Bloomsbury, 2011.
MLA (9th ed.) Zitazioa
Collin, P. H. Dictionary of Environment & Ecology. 5th ed. Bloomsbury, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.