CAWST (Editor) (2009): Biosand Filter Manual, Design, Construction, Installation, Operation and Maintenance. Alberta: Center for Affordable Water and Sanitation Technology (CAWST).
Mwabi et al. (2011) Household water treatment systems: A solution to the production of safe drinking water by the low-income communities of Southern Africa, Physics and Chemistry of the Earth, 36, 1120–1128 http://www.sciencedirect.com/sci ... i/S147470651100218X