منظمة الصحة العالمية (2003): تشغيل وصيانة انظمة تزويد المياة الوصرف الصحى فى الريف. URL [Accessed: 28.10.2017]
Perspectives are different frameworks from which to explore the knowledge around sustainable sanitation and water management. Perspectives are like filters: they compile and structure the information that relate to a given focus theme, region or context. This allows you to quickly navigate to the content of your particular interest while promoting the holistic understanding of sustainable sanitation and water management.