ماء الشرب: الفرق بين النسختين

.<ref>[[الأمم المتحدة]]:[http://www.unesco.org/new/en/natural-sciences/environment/water/wwap/ World Water Assessment Program], accessed on February 27, 2010 {{Webarchive|url=https://web.archive.org/web/20110605225426/http://www.unesco.org/water/wwap/facts_figures/basic_needs.shtml |date=05 يونيو 2011}}</ref>

 

<ref>WHO and UNICEF [https://washdata.org/fileadmin/user_upload/resources/JMP-report-2012-en.pdf, ''Progress on Drinking-water and Sanitation: 2012 Update''], WHO, Geneva and UNICEF, New York {{Webarchive|url=https://web.archive.org/web/20200316065413/https://washdata.org/fileadmin/user_upload/resources/JMP-report-2012-en.pdf, |date=16 مارس 2020}}</ref>