Gaya APA

Lougheed, Lin. (2010). Barron's IELTS : International English Language Testing System . : Barrons Educational Series.

Gaya Chicago

Lougheed, Lin. Barron's IELTS : International English Language Testing System. : Barrons Educational Series, 2010. Text.

Gaya MLA

Lougheed, Lin. Barron's IELTS : International English Language Testing System. : Barrons Educational Series, 2010. Text.

Gaya Turabian

Lougheed, Lin. Barron's IELTS : International English Language Testing System. : Barrons Educational Series, 2010. Print.