APA-referens (7:e uppl.)
Gonzalez, G., & Richards, J. W. (2004). The privileged planet: How our place in the cosmos is designed for discovery. Regnery Pub. ; National Book Network [distributor].
Chicago-referens (17:e uppl.)
Gonzalez, Guillermo, och Jay Wesley Richards. The Privileged Planet: How Our Place in the Cosmos Is Designed for Discovery. Washington, D.C. : Lanham, Md.: Regnery Pub. ; National Book Network [distributor], 2004.
MLA-referens (9:e uppl.)
Gonzalez, Guillermo, och Jay Wesley Richards. The Privileged Planet: How Our Place in the Cosmos Is Designed for Discovery. Regnery Pub. ; National Book Network [distributor], 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.