Bolt, B. A. (2004). Earthquakes (5th ed.). W.H. Freeman.
Chicago Style aipamenaBolt, Bruce A. Earthquakes. 5th ed. New York: W.H. Freeman, 2004.
MLA aipamenaBolt, Bruce A. Earthquakes. 5th ed. W.H. Freeman, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.