APA

Jakeman V., McDowell C., . (2003). Insight into IELTS. New York: Cambridge University Press.

Chicago

Jakeman V, McDowell C, . 2003. Insight into IELTS. New York: Cambridge University Press.

Harvard

Jakeman V., McDowell C., . (2003). Insight into IELTS. New York: Cambridge University Press.

MLA

Jakeman V, McDowell C, . Insight into IELTS. New York: Cambridge University Press. 2003.