Gaya APA
Supriyanto, H., Sumarjo, .
(2014).
Be the Winner Olimpiade IPS SMP
(
1)
.
Yogyakarta:
Pustaka Widyatama.
Gaya MLA
Supriyanto, Heru., Sumarjo, .
"Be the Winner Olimpiade IPS SMP".
1
Yogyakarta:
Pustaka Widyatama,
2014.
Ilmu Sosial.