Cita APA (7th ed.)

Keller, E. A. (2012). Earth's pistesses as hazards, disasters,and catastrophes. Prentice Hall.

Cita Chicago (17th ed.)

Keller, Edward A. Earth's Pistesses as Hazards, Disasters,and Catastrophes. Boston: Prentice Hall, 2012.

Cita MLA (9th ed.)

Keller, Edward A. Earth's Pistesses as Hazards, Disasters,and Catastrophes. Prentice Hall, 2012.