Gaya APA
S.Pd, H, S., Sumarjo, S.
(2014).
Be The Winner OLIMPIADE IPS SMP
.
Yogyakarta:
pustaka widyatama.
Gaya MLA
S.Pd, Heru, Supriyanto,., Sumarjo, S.Pd.
"Be The Winner OLIMPIADE IPS SMP".
Yogyakarta:
pustaka widyatama,
2014.
Text.