Gaya APA

Lougheed, L. (2010). Barron's IELTS Practice Exam (+Audio CDs) . New York: Barron's Educational Series. Inc.

Gaya MLA

Lougheed, Lin. "Barron's IELTS Practice Exam (+Audio CDs)". New York: Barron's Educational Series. Inc, 2010. Teks (Text).