Gaya APA

Lougheed, L. (2010). Barron's IELTS practice exams with audio CDs: International English Language Testing System . New York: Barron\'s Educational Series, I.

Gaya MLA

Lougheed, Lin. "Barron's IELTS practice exams with audio CDs: International English Language Testing System". New York: Barron\'s Educational Series, I, 2010. Teks.