Não informado. (2001). Ecological Engineering: The journal of ecotechnology. Elsevier Science.
Lua i Stíl Chicago (17ú heag.)Não informado. Ecological Engineering: The Journal of Ecotechnology. Oxford, Inglaterra: Elsevier Science, 2001.
Lua MLA (8ú heag.)Não informado. Ecological Engineering: The Journal of Ecotechnology. Elsevier Science, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.