Gaya APA
Surjo, . (1959).
Bulletin of the Volcanological Survey of Indonesia for the Year 1959 No. 102 .
Bandung:
Djawatan Geologi.
Gaya MLA
Surjo, .
"Bulletin of the Volcanological Survey of Indonesia for the Year 1959 No. 102".
Bandung:
Djawatan Geologi,
1959.
Text.