Gaya APA

System, I, I, E, L, T. (2013). CD: IELTS International English Language Testing System (Ed. 2.). : Binarupa aksara.

Gaya MLA

System, IELTS, International, English, Language, Testing. "CD: IELTS International English Language Testing System". Ed. 2. : Binarupa aksara, 2013. CD-ROM.