Tohutoro APA (7th ed.)
Alegre, H. (2017). Performance indicators for water supply services (Third edition.). IWA Publishing.
Tohutoru Kātū Chicago (17th ed.)
Alegre, Helena. Performance Indicators for Water Supply Services. Third edition. London, England: IWA Publishing, 2017.
Tohutoro MLA (9th ed.)
Alegre, Helena. Performance Indicators for Water Supply Services. Third edition. IWA Publishing, 2017.
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