APA Style
Astuti, W, P., Mohammad, J.
(2010).
Olimpiade IPS (Social Studies)
.
Jakarta:
Cerdas Pustaka.
MLA Style
Astuti, Winarni, Puji., Mohammad, Jauhar..
"Olimpiade IPS (Social Studies)".
Jakarta:
Cerdas Pustaka,
2010.
Text.