P. B. Moriarty, Smits, S., Butterworth, J., en Franceys, R.,
“Trends in rural water supply : towards a service delivery approach”, vol. 6, nr. 3, pp. 329-349 : 4 tab., 2013.
D. Casella, Magara, P., Kumasi, T. C., Guijt, I., en van Soest, A.,
“The Triple-S project Sensemaker® experience - A method tested and rejected”, vol. 9. IRC, The Hague, The Netherlands, p. 65 p.; 9 tab.; 13 fig., 2013.
T. Schouten en Moriarty, P. B.,
“The Triple-S theory of change”, vol. 3. IRC, The Hague, the Netherlands, p. 17 p. : 2 tab.; 5 fig., 2013.
U. Programme Division,
“Unicef cholera toolkit 2013”. UNICEF, New York, NY, USA, p. 167 p.; ill.; tab.; fig., 2013.
D. C. Torres, Jacobsen, M., Webster, M., en Vairavamoorthy, K.,
“Urban access to water supply and sanitation in Sub-Saharan Africa: the future of water in African cities : why waste water?”. World Bank, Washington, DC, USA, p. xxii, 199 p.; ill.; tab.;fig.; boxes, 2013.