Cren, E. L. (1980). The functioning of freshwater ecosystems. Cambridge University Press.
Chicago Style aipamenaCren, E.D. Le. The Functioning of Freshwater Ecosystems. Cambridge: Cambridge University Press, 1980.
MLA aipamenaCren, E.D. Le. The Functioning of Freshwater Ecosystems. Cambridge University Press, 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.