Gaya APA
Hadikusumo, D.
(1975).
Volcanic Activities in Indonesia During 1974
(
May 1975)
.
Bandung:
U S Geological Survey.
Gaya MLA
Hadikusumo, D..
"Volcanic Activities in Indonesia During 1974".
May 1975
Bandung:
U S Geological Survey,
1975.
Text.