Não informado. (1975). Water international. International Water Resources Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Water International. Urbana, Ill: International Water Resources Association, 1975.
Lua MLA (8ú heag.)Não informado. Water International. International Water Resources Association, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.