Ruhiu, J., Ogendo, M., Kamundi, E., Kaseve, C., Owuocha, K., y Mbachia, S.N., «Strategic guidelines for improving water and sanitation services in Nairobi’s informal settlements». Nairobi City Water and Sewerage Company, NCWSC, Nairobi, Kenya, p. 36 p. : boxes, photogr., 2009.