Gaya APA

Aulia, A., S., N, V. (2013). I Can Speak English : Purple Book (Cet. 3.--). Jakarta: Erlangga.

Gaya MLA

Aulia, Afrin., S., Novi, Vidya. "I Can Speak English : Purple Book". Cet. 3.-- Jakarta: Erlangga, 2013. Text.