Gaya APA
Roeder, O. (1971).
Who's who in Indonesia, biographies of prominent Indonesian personalities in all fields. .
Djakarta:
Gunung Agung.
Gaya MLA
Roeder, O.G..
"Who's who in Indonesia, biographies of prominent Indonesian personalities in all fields. ".
Djakarta:
Gunung Agung,
1971.
Buku.