Não informado. (2004). Sewage Works Journal. Federation of Sewage Works Associations.
Lua i Stíl Chicago (17ú heag.)Não informado. Sewage Works Journal. Easton, Pa: Federation of Sewage Works Associations, 2004.
Lua MLA (8ú heag.)Não informado. Sewage Works Journal. Federation of Sewage Works Associations, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.