Von Sperling, M. (2007). Activated Sludge and Aerobic Biofilm Reactors. IWA Publishing.
Cita Chicago (17th ed.)Von Sperling, Marcos. Activated Sludge and Aerobic Biofilm Reactors. IWA Publishing, 2007.
Cita MLA (9th ed.)Von Sperling, Marcos. Activated Sludge and Aerobic Biofilm Reactors. IWA Publishing, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.