ebrary, Inc, & Stern, A. (2001). Our universe: The thrill of extragalactic exploration as told by leading experts. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)ebrary, Inc, agus Alan Stern. Our Universe: The Thrill of Extragalactic Exploration as Told by Leading Experts. Cambridge UK ; New York, NY: Cambridge University Press, 2001.
Lua MLA (9ú heag.)ebrary, Inc, agus Alan Stern. Our Universe: The Thrill of Extragalactic Exploration as Told by Leading Experts. Cambridge University Press, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.