Gaya APA

The Complete Book of The IELTS Preparation: Panduan persiapan tes IELTS. (2021). Yogyakarta: Penerbit andi.

Gaya MLA

The Complete Book of The IELTS Preparation: Panduan persiapan tes IELTS. Ed. 1. Yogyakarta: Penerbit andi, 2021. Text.