Cita APA (7th ed.)
Bolt, B. A. Earthquakes and Geological Discovery. Scientific American.
Cita Chicago (17th ed.)
Bolt, Bruce A. Earthquakes and Geological Discovery. Nueva York, EUA: Scientific American.
Cita MLA (9th ed.)
Bolt, Bruce A. Earthquakes and Geological Discovery. Scientific American.
Atenció: Aquestes cites poden no estar 100% correctes.