Gaya APA

Educational, B. (2010). Barron's IELTS : International English Language Testing System CD 2 . United States of America: Barron's Educational Series. Inc.

Gaya MLA

Educational, Barron's. "Barron's IELTS : International English Language Testing System CD 2". United States of America: Barron's Educational Series. Inc, 2010. VCD / DVD.