Thomas. Orbit of Discovery. The University of Akron Press.
Lua i Stíl Chicago (17ú heag.)Thomas. Orbit of Discovery. The University of Akron Press.
Lua MLA (8ú heag.)Thomas. Orbit of Discovery. The University of Akron Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.