WHO Study Group on Technology for Water Supply and Sanitation in Developing Countries. (1987). Technology for water supply and sanitation in developing countries: Report of a WHO Study Group. World Health Organization.
Chicago-Zitierstil (17. Ausg.)WHO Study Group on Technology for Water Supply and Sanitation in Developing Countries. Technology for Water Supply and Sanitation in Developing Countries: Report of a WHO Study Group. Geneva: World Health Organization, 1987.
MLA-Zitierstil (9. Ausg.)WHO Study Group on Technology for Water Supply and Sanitation in Developing Countries. Technology for Water Supply and Sanitation in Developing Countries: Report of a WHO Study Group. World Health Organization, 1987.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.