APA (7th ed.) Citation

Kurniawan, E. (2016). O. pt. gramedia pustaka utama.

Chicago Style (17th ed.) Citation

Kurniawan, Eka. O. pt. gramedia pustaka utama, 2016.

MLA (8th ed.) Citation

Kurniawan, Eka. O. pt. gramedia pustaka utama, 2016.

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