Não informado. (2004). Knowledge: An illustrated magazine of science. [s.n.].
Lua i Stíl Chicago (17ú heag.)Não informado. Knowledge: An Illustrated Magazine of Science. [s.l.]: [s.n.], 2004.
Lua MLA (8ú heag.)Não informado. Knowledge: An Illustrated Magazine of Science. [s.n.], 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.