Spulber, N. (1997). Economics of water resources. Boston: Kluwer Academic.
Chicago Style aipamenaSpulber, Nicolas. Economics of Water Resources. Boston: Kluwer Academic, 1997.
MLA aipamenaSpulber, Nicolas. Economics of Water Resources. Boston: Kluwer Academic, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.