APA

Sahanaya W., Lindeck J., . (2002). IELTS. Preparation and Practice. New York: Oxford University Press.

Chicago

Sahanaya W, Lindeck J, . 2002. IELTS. Preparation and Practice. New York: Oxford University Press.

Harvard

Sahanaya W., Lindeck J., . (2002). IELTS. Preparation and Practice. New York: Oxford University Press.

MLA

Sahanaya W, Lindeck J, . IELTS. Preparation and Practice. New York: Oxford University Press. 2002.