Gaya APA
Kahar, J., Widodo, R, B. (1981).
Analysis of geoid in Indonesia region .
Bandung:
Institut Teknologi Bandung.
Gaya MLA
Kahar, Joenil., Widodo, Romy, Budhi.
"Analysis of geoid in Indonesia region".
Bandung:
Institut Teknologi Bandung,
1981.
Text.