Não informado. (2002). SA Waterbulletin. Water Research Commission.
Lua i Stíl Chicago (17ú heag.)Não informado. SA Waterbulletin. Pretoria, Africa do Sul: Water Research Commission, 2002.
Lua MLA (8ú heag.)Não informado. SA Waterbulletin. Water Research Commission, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.