APA-referens (7:e uppl.)
Zimmerman, R. (2003). Leaving earth: Space stations, rival superpowers, and the quest for interplanetary travel. Joseph Henry Press.
Chicago-referens (17:e uppl.)
Zimmerman, Robert. Leaving Earth: Space Stations, Rival Superpowers, and the Quest for Interplanetary Travel. Washington, District of Columbia: Joseph Henry Press, 2003.
MLA-referens (9:e uppl.)
Zimmerman, Robert. Leaving Earth: Space Stations, Rival Superpowers, and the Quest for Interplanetary Travel. Joseph Henry Press, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.