Tullis, C., T., &., G.(2006).TARGET SCORE: A PREPARATION COURSE FOR THE TOEIC TEST STUDENT'S BOOK WITH TWO AUDIO CDS .United Kingdom UK:Cambridge University Press.
Gaya MLA
Tullis, Charles, Talcott, &, Graham."TARGET SCORE: A PREPARATION COURSE FOR THE TOEIC TEST STUDENT'S BOOK WITH TWO AUDIO CDS".United Kingdom UK:Cambridge University Press,2006.Buku Inti.