Smits, S., Atengdem, J.A., Darteh, B., Moriarty, P.B., Koppen, B. van, Nyarko, K., Obuoubisa-Darko, A., Ofosu, E., Venot, J.-P., and Williams, T., “Multiple use water services in Ghana : scoping study”. International Water Management Institute (IWMI), S.l., p. 73 p.; 5 fig.; 3 tab.; 13 photographs, 2011.