Gaya APA

Hawkey,Roger, . (2006). Impact Theory And Practice : Studies Of The IELTS Test And Progetto Lingue 2000 . New York: Cambridge University Press.

Gaya MLA

Hawkey,Roger, . "Impact Theory And Practice : Studies Of The IELTS Test And Progetto Lingue 2000". New York: Cambridge University Press, 2006. Textbook.