Não informado. (1988). Nordic Journal of Freshwater Research. Institute of Freshwater Research.
Lua i Stíl Chicago (17ú heag.)Não informado. Nordic Journal of Freshwater Research. Drottningholm, Suecia: Institute of Freshwater Research, 1988.
Lua MLA (8ú heag.)Não informado. Nordic Journal of Freshwater Research. Institute of Freshwater Research, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.