Mann, H. T., & Williamson, D. (1976). Water treatment and sanitation: A handbook of simple methods for rural areas in developing countries (Revised ed.). Intermediate Technology Publications.
Chicago-referens (17:e uppl.)Mann, H. T., och D. Williamson. Water Treatment and Sanitation: A Handbook of Simple Methods for Rural Areas in Developing Countries. Revised ed. London: Intermediate Technology Publications, 1976.
MLA-referens (8:e uppl.)Mann, H. T., och D. Williamson. Water Treatment and Sanitation: A Handbook of Simple Methods for Rural Areas in Developing Countries. Revised ed. Intermediate Technology Publications, 1976.
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