Smith, K., & Petley, D. N. (2009). Environmental hazards: Ssessing risk and reducing disaster (Fifth edition.). Routledge.
Chicago-čujuhus (17. p.)Smith, Keith, juo David N. Petley. Environmental Hazards: Ssessing Risk and Reducing Disaster. Fifth edition. Milton Park: Routledge, 2009.
MLA-čujuhus (9. p.)Smith, Keith, juo David N. Petley. Environmental Hazards: Ssessing Risk and Reducing Disaster. Fifth edition. Routledge, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.