Gaya APA
Lin, L. (2010).
Barron's The Leader in Test Preparation : IELTS Practice Exams with 2 Audio CDs .
Usa:
Barron's Educational Series.
Gaya MLA
Lin, L..
Barron's The Leader in Test Preparation : IELTS Practice Exams with 2 Audio CDs.
Usa:
Barron's Educational Series,
2010.
Text.