Cita APA (7a ed.)

Smith, K., & Petley, D. N. (2009). Environmental hazards: Ssessing risk and reducing disaster (Fifth edition.). Routledge.

Cita Chicago Style (17a ed.)

Smith, Keith, y David N. Petley. Environmental Hazards: Ssessing Risk and Reducing Disaster. Fifth edition. Milton Park: Routledge, 2009.

Cita MLA (9a ed.)

Smith, Keith, y David N. Petley. Environmental Hazards: Ssessing Risk and Reducing Disaster. Fifth edition. Routledge, 2009.