APA aipamena

 Adams, S. (2006).  Geography of the world.  DK.

Chicago Style aipamena

 Adams, Simon.  Geography of the World.  DK, 2006.

MLA aipamena

 Adams, Simon.  Geography of the World.  DK, 2006.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.