Gaya APA

Graudin, R. (2015). The Walled City = Kota Di Balik Tembok (Cet. 1). Jakata: Pt. Gramedia Pusta Utama.

Gaya MLA

Graudin, Ryan. "The Walled City = Kota Di Balik Tembok". Cet. 1 Jakata: Pt. Gramedia Pusta Utama, 2015. Text.