Author: Deal, P. T. and Furey S. G.
Year of Publishing: 2019
Publisher: Skat Foundation
Author: A. Armstrong, J. Mahan & J. Zapor
Year of Publishing: 2017
Publisher: WEDC Conference 2017
Institution: Water Mission
Author: PEARCE-OROZ, G.
Year of Publishing: 2011
Publisher: The World Bank
Institution: Water and Sanitation Program