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