World Health Organization. (2012). Water safety planning for small community water supplies: Step-by-step risk management guidance for drinking water supplies in small communities. World Health Organization.
Chicago-viite (17. p.)World Health Organization. Water Safety Planning for Small Community Water Supplies: Step-by-step Risk Management Guidance for Drinking Water Supplies in Small Communities. Geneva, Switzerland: World Health Organization, 2012.
MLA-viite (8. p.)World Health Organization. Water Safety Planning for Small Community Water Supplies: Step-by-step Risk Management Guidance for Drinking Water Supplies in Small Communities. World Health Organization, 2012.
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