Biblio

C. Lüthi, McConville, J., y Kvarnström, E., «Community-based approaches for addressing the urban sanitation challenges», International journal of urban sustainable development, pp. p. 49-63 : 3 fig., 1 tab., 2009.

C. Lüthi, Schertenleib, R., y Tilley, E., «The household-centred environmental sanitation approach», Waterlines, an international journal of water, sanitation and waste, pp. p. 2-4 : 1 fig., 2 photogr., 2007.