Παραπομπή APA

Alegre, H. (2012). Performance indicators for water supply services (2nd ed.). London: IWA Publishing.

Παραπομπή Chicago Style

Alegre, Helena. Performance Indicators for Water Supply Services. 2nd ed. London: IWA Publishing, 2012.

Παραπομπή MLA

Alegre, Helena. Performance Indicators for Water Supply Services. 2nd ed. London: IWA Publishing, 2012.

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