Helios. Texas Tech University Press.
Lua i Stíl Chicago (17ú heag.)Helios. Texas Tech University Press.
Lua MLA (9ú heag.)Helios. Texas Tech University Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)