Twort, A. C., Brandt, M. J., & Ratnayaka, D. D. (2000). Water supply (5th ed.). Arnold/IWA Pub..
Tohutoru Kātū Chicago (17th ed.)Twort, A. C., Malcolm J. Brandt, me Don D. Ratnayaka. Water Supply. 5th ed. London: Arnold/IWA Pub., 2000.
Tohutoro MLA (9th ed.)Twort, A. C., et al. Water Supply. 5th ed. Arnold/IWA Pub., 2000.
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