1. Chapter 11: wastewater sources and types in water and wastewater treatment;Drinan,2013
2. D.E.McNabb. Chapter 6: water and wastewater utilities in public utilities, Old Problems New Challenges. 2nd Edition. Edward Edgar Publishing Limited. Northampton, Massachusett, pp 121–131 (ISBN 13: 978-1785365522).
3. Utility Management of Water and Wastewater Operators;Bloetscher,2011
4. The UK sewer network: perceptions of its condition and role in flood risk;French,2011