Gaya APA
Riskiyanto, D. (2025).
New Insight OSN (Olimpiade Sains Nasional) IPS SMP/MTs .
Jakarta:
Gramedia Widiasarana Indonesia.
Gaya MLA
Riskiyanto, Dkk.
"New Insight OSN (Olimpiade Sains Nasional) IPS SMP/MTs".
Jakarta:
Gramedia Widiasarana Indonesia,
2025.
Karya Cetak.