Mackey, William Francis, author
Longman, 1966
Buku Teks
edited by Gloria Poedjosoedarmo
SEAMEO Regional Language Centre, 2004
Buku Teks
Nunan, David, author
Cambridge University Press, 2006
Buku Teks
Routledge, 2004
Buku Teks
Ur, Penny, author
Cambridge University Press, 1991
Buku Teks