APA Style
Gerungan Saul Samuel Jacob Ratulangi. (2010).
:
.
Chicago Style
Gerungan Saul Samuel Jacob Ratulangi.
.
:
,
2010.
Text.
MLA Style
Gerungan Saul Samuel Jacob Ratulangi.
.
:
,
2010.
Text.
Turabian Style
Gerungan Saul Samuel Jacob Ratulangi.
:
,
2010.
Print.