Cita APA (7th ed.)

Loungheed, L. (2011). Barron's IELTS: International English language testing system (2nd ed.). New Age Intenational.

Cita Chicago (17th ed.)

Loungheed, Lin. Barron's IELTS: International English Language Testing System. 2nd ed. New Delhi: New Age Intenational, 2011.

Cita MLA (8th ed.)

Loungheed, Lin. Barron's IELTS: International English Language Testing System. 2nd ed. New Age Intenational, 2011.