Cita APA (7th ed.)
Twort, A. C., Brandt, M. J., & Ratnayaka, D. D. (2000). Water supply (5th ed.). Arnold/IWA Pub..
Cita Chicago (17th ed.)
Twort, A. C., Malcolm J. Brandt, i Don D. Ratnayaka. Water Supply. 5th ed. London: Arnold/IWA Pub., 2000.
Cita MLA (9th ed.)
Twort, A. C., et al. Water Supply. 5th ed. Arnold/IWA Pub., 2000.
Atenció: Aquestes cites poden no estar 100% correctes.