Gaya APA
Tangkubanparahu (Indonesia) Seismic Unrest during 12-19 April 2005. ().
Washington:
Smithsonian National Museum of Natural History.
Gaya MLA
Tangkubanparahu (Indonesia) Seismic Unrest during 12-19 April 2005.
.
Washington:
Smithsonian National Museum of Natural History,
.
.