Dyfyniad APA

Twort, A. C., Brandt, M. J., & Ratnayaka, D. D. (2000). Water supply (5th ed.). Arnold/IWA Pub..

Dyfyniad Arddull Chicago

Twort, A. C., Malcolm J. Brandt, and Don D. Ratnayaka. Water Supply. 5th ed. London: Arnold/IWA Pub., 2000.

Dyfyniad MLA

Twort, A. C., et al. Water Supply. 5th ed. Arnold/IWA Pub., 2000.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.