Não informado. (2001). Science Series. Oregon State College.
Lua i Stíl Chicago (17ú heag.)Não informado. Science Series. Corvallis, Ore: Oregon State College, 2001.
Lua MLA (8ú heag.)Não informado. Science Series. Oregon State College, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.