Gaya APA
Alcantara-Ayala, I., Geudie, A. (2010).
Geomorphological Hazards And Disaster Rrevention .
Bandung:
CAMBRIDGE.
Gaya MLA
Alcantara-Ayala, Irasema., Geudie, Andrew.
"Geomorphological Hazards And Disaster Rrevention".
Bandung:
CAMBRIDGE,
2010.
Textbook.