Sahanaya, W., & Lindeck, J. (2002). IELTS preparation and practice: Listening and speaking (Second edition.). Oxford University Press.

Sahanaya, Wendy, and Jeremy Lindeck. IELTS Preparation and Practice: Listening and Speaking. Second edition. Oxford: Oxford University Press, 2002.

Sahanaya, Wendy, and Jeremy Lindeck. IELTS Preparation and Practice: Listening and Speaking. Second edition. Oxford University Press, 2002.