APA

Sahanaya W., Hughes T., . (2009). IELTS Preparation and Practice. Victoria: Oxford University Press.

Chicago

Sahanaya W, Hughes T, . 2009. IELTS Preparation and Practice. Victoria: Oxford University Press.

Harvard

Sahanaya W., Hughes T., . (2009). IELTS Preparation and Practice. Victoria: Oxford University Press.

MLA

Sahanaya W, Hughes T, . IELTS Preparation and Practice. Victoria: Oxford University Press. 2009.