Cita APA (7a ed.)

Levy, M., & Salvadori, M. G. (1995). Why the earth quakes: The story of earthquakes and volcanoes. W. W. Norton.

Cita Chicago Style (17a ed.)

Levy, Matthys, y Mario G. Salvadori. Why the Earth Quakes: The Story of Earthquakes and Volcanoes. New York: W. W. Norton, 1995.

Cita MLA (8a ed.)

Levy, Matthys, y Mario G. Salvadori. Why the Earth Quakes: The Story of Earthquakes and Volcanoes. W. W. Norton, 1995.