Gaya APA

Riskiyanto, M. et al (2024). New Insight Olimpiade Sains Nasional (OSN) IPS SMP/MTS . Jakarta: Gramedia Widiasarana Indonesia.

Gaya MLA

Riskiyanto, M.Pd. et al. "New Insight Olimpiade Sains Nasional (OSN) IPS SMP/MTS". Jakarta: Gramedia Widiasarana Indonesia, 2024. Text.