Gaya APA
Langley, Andrew. (2007).
Bencana Alam .
:
Erlangga.
Gaya Chicago
Langley, Andrew.
Bencana Alam.
:
Erlangga,
2007.
Reference.
Gaya MLA
Langley, Andrew.
Bencana Alam.
:
Erlangga,
2007.
Reference.
Gaya Turabian
Langley, Andrew.
Bencana Alam.
:
Erlangga,
2007.
Reference.