(1994). Operation and maintenance of water supply and sanitaion systems: Case studies. Genava: World Health Organization (WHO).
Citação norma ChicagoOperation and Maintenance of Water Supply and Sanitaion Systems: Case Studies. Genava: World Health Organization (WHO), 1994.
Citação norma MLAOperation and Maintenance of Water Supply and Sanitaion Systems: Case Studies. Genava: World Health Organization (WHO), 1994.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.