APA (7th ed.) Zitazioa
Twort, A. C., Brandt, M. J., & Ratnayaka, D. D. (2000). Water supply (5th ed.). Arnold/IWA Pub..
Chicago Style (17th ed.) Zitazioa
Twort, A. C., Malcolm J. Brandt, eta Don D. Ratnayaka. Water Supply. 5th ed. London: Arnold/IWA Pub., 2000.
MLA (9th ed.) Zitazioa
Twort, A. C., et al. Water Supply. 5th ed. Arnold/IWA Pub., 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.