Benefield, L. D. (1980). Biological Process Design For Wastewater Treatment. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Benefield, Larry D. Biological Process Design For Wastewater Treatment. Prentice Hall, 1980.
Lua MLA (8ú heag.)Benefield, Larry D. Biological Process Design For Wastewater Treatment. Prentice Hall, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.