Cita APA (7a ed.)

Smith, K., & Petley, D. N. (2009). Environmental Hazards: Assessing risk and reducing disaster (5th ed.). Routledge.

Cita Chicago Style (17a ed.)

Smith, Keith, y David N. Petley. Environmental Hazards: Assessing Risk and Reducing Disaster. 5th ed. London: Routledge, 2009.

Cita MLA (9a ed.)

Smith, Keith, y David N. Petley. Environmental Hazards: Assessing Risk and Reducing Disaster. 5th ed. Routledge, 2009.