Gaya APA
Landslide control. (1984).
Yogyakarta:
Volcanic SABO Technical Centre.
Gaya Chicago
Landslide control.
.
Yogyakarta:
Volcanic SABO Technical Centre,
1984.
Text.
Gaya MLA
Landslide control.
.
Yogyakarta:
Volcanic SABO Technical Centre,
1984.
Text.
Gaya Turabian
Landslide control.
Yogyakarta:
Volcanic SABO Technical Centre,
1984.
Print.