Russell, D. L. (2006). Practical Wastewater TreatmentDavid L. Russell. John Wiley.
Lua i Stíl Chicago (17ú heag.)Russell, David L. Practical Wastewater TreatmentDavid L. Russell. John Wiley, 2006.
Lua MLA (8ú heag.)Russell, David L. Practical Wastewater TreatmentDavid L. Russell. John Wiley, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.