Gaya APA
Hydman, D., Hydman, D. (2009).
Natural Hazards and Disasters, 3rd Edition (3).
Australia:
Brooks / Cole Publishing Company.
Gaya MLA
Hydman, Donald., Hydman, David.
"Natural Hazards and Disasters, 3rd Edition".
3
Australia:
Brooks / Cole Publishing Company,
2009.
Text.