Phillips, M.

Phillips, M., Mills, A. & Feachem, R.G., 1987. Options for diarrhoeal diseases control : the cost and cost-effectiveness of selected interventions for the prevention of diarrhoea, (EPC publication no. 13) London, UK: London School of Hygiene and Tropical Medicine. Available at: https://pt.ircwash.org/sites/default/files/245.11-87OP-4352.pdf.