Gaya APA
LOUISE, ., SPILSBURY, R.
(2012).
Mengenal Bencana Alam LONGSOR
.
JAKARTA:
BIP.
Gaya MLA
LOUISE, ., SPILSBURY, RICHART.
"Mengenal Bencana Alam LONGSOR".
JAKARTA:
BIP,
2012.
Text.