Gaya APA
Tobing, B., Safwan,Mardanas, .
(2010).
Gerungan Saul Samuel Jacob Ratulangi
.
Jakarta:
Mutiara Sumber.
Gaya MLA
Tobing, Bey., Safwan,Mardanas, .
"Gerungan Saul Samuel Jacob Ratulangi".
Jakarta:
Mutiara Sumber,
2010.
Text.