Cita APA (7th ed.)

Witt, R. d. (2008). How to Prepare for IELTS. The British Council.

Cita Chicago (17th ed.)

Witt, Ray de. How to Prepare for IELTS. New Delhi: The British Council, 2008.

Cita MLA (9th ed.)

Witt, Ray de. How to Prepare for IELTS. The British Council, 2008.