Gaya APA

Hidayati, N, N. (). Master Trick Ielts (International English Language Testing System) . : Pt Gramedia Widiasarana Indonesia.

Gaya MLA

Hidayati, Niswatin, Nurul. "Master Trick Ielts (International English Language Testing System)". : Pt Gramedia Widiasarana Indonesia, . Text.