Não informado. (1960). Journal. Water Pollution Control Federation.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal. Alexandria, Va: Water Pollution Control Federation, 1960.
Lua MLA (8ú heag.)Não informado. Journal. Water Pollution Control Federation, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.