(1996). Water And Wastewater Technology / Mark J. Hammer, Mark J. Hammer. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Water And Wastewater Technology / Mark J. Hammer, Mark J. Hammer. Prentice Hall, 1996.
Lua MLA (8ú heag.)Water And Wastewater Technology / Mark J. Hammer, Mark J. Hammer. Prentice Hall, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.