* de la Harpe, J. 2012. [https://www.ircwash.org/sites/default/files/084-201502triple-s_bn05defweb.pdf Making aid effective at the local level], Briefing note no.5. IRC International Water and Sanitation Centre.
* Harmonisation and coordination [http://www.waterservicesthatlast.org/resources/building_blocks/harmonisation_coordination/harmonisation_and_coordination building block summary sheet]