Gaya APA
Earthquakes In Indoensia 1957-1958. (1958).
Djakarta:
Ministry Of Air Communications Meteorological And Geophysical Sevice.
Gaya MLA
Earthquakes In Indoensia 1957-1958.
.
Djakarta:
Ministry Of Air Communications Meteorological And Geophysical Sevice,
1958.
Text.