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(EN) NERC, British Geological Survey Commissioned Report, Guidelines for assessing the risk to groundwater from on-site sanitation (abstract), Sustainable Sanitation Alliance, 2011. URL consultato il 5 gennaio 2015.
(EN) K. Mayumbelo, Cost analysis for applying ecosan in peri-urban areas to achieve the MDGs (abstract), Sustainable Sanitation Alliance, 2008. URL consultato il 5 gennaio 2015.
(EN) M. Buitenkamp e A. Richert Stintzing, Europe's sanitation problem - 20 million Europeans need access to safe and affordable sanitation (abstract), Women in Europe for a Common Future, Sustainable Sanitation Alliance, 2008. URL consultato il 5 gennaio 2015.
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(EN) David Still e Kitty Foxon, Do pit additives work?, Water Research Commission, University of Kwazulu-Natal, Partners in Development, 2012. URL consultato il 15 maggio 2020.