Não informado. (1964). Water works and wastes engineering. R.H. Donnelley, Magazine Publishing Division.
Lua i Stíl Chicago (17ú heag.)Não informado. Water Works and Wastes Engineering. New York: R.H. Donnelley, Magazine Publishing Division, 1964.
Lua MLA (8ú heag.)Não informado. Water Works and Wastes Engineering. R.H. Donnelley, Magazine Publishing Division, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.