Williams, P. T. (2005). Waste treatment and disposal (Second edition.). John Wiley & Sons.
Cita Chicago (17th ed.)Williams, Paul T. Waste Treatment and Disposal. Second edition. Hoboken N.J: John Wiley & Sons, 2005.
Cita MLA (8th ed.)Williams, Paul T. Waste Treatment and Disposal. Second edition. John Wiley & Sons, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.