===Key documents===
* Carbon credits: potential source of funding for wastewater treatment projects, [http://www.sourceircwash.irc.nlorg/pagenews/48222 e-source-sanitation-news E-Source], 19 May 2009
* EUREAU, 2012. [http://celinehervebazin.files.wordpress.com/2012/03/eureau-3ts-short-guide-version-internet.pdf ‘3Ts’ Tariffs, taxes and transfers in the European water sector]. Short guide.
* OECD, 2010. [http://www.oecd%E2%80%90ilibraryituc-csi.org/developmentIMG/civil%E2%80%90society%E2%80%90and%E2%80%90aid%E2%80%90effectiveness_9789264056435%E2%80%90en pdf/Civil_Society_and_Aid_Effectiveness_2_.pdf Civil society and aid effectiveness: Findings, recommendations and good practice.] Organisation for Economic Co‐operation and Development/ Development Assistance Committee.
* Pezon, C., Fonseca, C. and Butterworth, J., 2010. [http://www.ircircwash.nlorg/contentresources/download/152801/519929/file/02_Background_Paper_zw.pdf irc-symposium-2010-pumps-pipes-and-promises-background-paper-pumps-pipes-and-promises IRC Symposium 2010 Pumps, Pipes and Promises. Background paper: pumps, pipes and promises. Costs, finances and accountability for sustainable WASH services]. The Hague, The Netherlands: IRC International Water and Sanitation Centre.
* Saywell, D. and Fonseca, C., 2006. [http://www.lboro.ac.uk/well/resources/fact-sheets/fact-sheets-htm/mcfs.htm Microfinance for Sanitation]. WELL factsheet. Loughborough: WELL/WEDC- Water, Engineering and Development Centre, Loughborough University of Technology.
* Sijbesma, C., 2011. [http://www.ircircwash.nlorg/homeresources/information_services/publications/publications_by_date/sanitation_financing_models_for_the_urban_poor sanitation-financing-models-urban-poor Sanitation Financing models for the urban poor]. Thematic Overview Paper 25. The Hague: IRC International Water and Sanitation Centre (Published November 2011).
* OECD, 2009. [http://www.oecd.org/greengrowth/sustainable-agriculture/44476961.pdf Setting the stage. Managing Water for All: An OECD perspective on pricing and financing.] ISBN-978-92-64-05033-4
* Verhoeven, J., Uytewaal, E. and de la Harpe, J., 2011. [http://www.ircircwash.nlorg/top26 resources/aid-effectiveness-water-and-sanitation-sector-policies-practices-and-perspectives Aid effectiveness in the water and sanitation sector: policies, practices and perspectives]. (Thematic Overview Paper 26) The Hague: IRC International Water and Sanitation Centre.
* Water Institute, 2012. Carbon credits and HWTS: a viable "green" funding mechanism? Webinar, 17 July 2012. Chapel Hill, NC, USA, The Water Institute, Gillings School of Global Public Health, University of North Carolina at Chapel Hill