Gaya APA
Ijen (Indonesia) Increased Seismicity Since April 1999 ; White Plumes and Phreatic Eruptions. ().
Washington:
Smithsonian Institution press.
Gaya MLA
Ijen (Indonesia) Increased Seismicity Since April 1999 ; White Plumes and Phreatic Eruptions.
.
Washington:
Smithsonian Institution press,
.
.