(1981). Sanitation in developing countries: Proceedings of a workshop on training held in Lobatse, Botswana, 14-20, August 1980. International Development Research Centre.
Chicago-referens (17:e uppl.)Sanitation in Developing Countries: Proceedings of a Workshop on Training Held in Lobatse, Botswana, 14-20, August 1980. Ottawa: International Development Research Centre, 1981.
MLA-referens (9:e uppl.)Sanitation in Developing Countries: Proceedings of a Workshop on Training Held in Lobatse, Botswana, 14-20, August 1980. International Development Research Centre, 1981.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.