APA (7th ed.) Citation

Supriyatna, U., & Suryadi, E. (2016). Pena Emas OSN Geografi SMA/MA. YRAMA WIDYA.

Chicago Style (17th ed.) Citation

Supriyatna, Upi, and Edi Suryadi. Pena Emas OSN Geografi SMA/MA. YRAMA WIDYA, 2016.

MLA (8th ed.) Citation

Supriyatna, Upi, and Edi Suryadi. Pena Emas OSN Geografi SMA/MA. YRAMA WIDYA, 2016.

Warning: These citations may not always be 100% accurate.