Gaya APA
Langley, Andrew. (2007).
Bencana Alam .
Hoboken, NJ:
Wiley.
Gaya Chicago
Langley, Andrew.
Bencana Alam.
Hoboken, NJ:
Wiley,
2007.
Text.
Gaya MLA
Langley, Andrew.
Bencana Alam.
Hoboken, NJ:
Wiley,
2007.
Text.
Gaya Turabian
Langley, Andrew.
Bencana Alam.
Hoboken, NJ:
Wiley,
2007.
Print.