Não informado. (1987). Journal of the Institution of Water and Environmental Management. Institution of Water and Environmental Management.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of the Institution of Water and Environmental Management. London: Institution of Water and Environmental Management, 1987.
Lua MLA (8ú heag.)Não informado. Journal of the Institution of Water and Environmental Management. Institution of Water and Environmental Management, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.