Multamia Retno Mayekti Tawangsih, author
Akbar Media Sarana, 2007
Buku Teks
SEAMEO, 2016
Buku Teks
Lee, W R
Oxford University Press, 1991
Buku Teks
Lee, W. R.
Oxford University Press, 1991
Buku Teks
Wright, Andrew, 1937-, author
Cambridge University Press , 1994
Buku Teks