Mohamad Sadikin, author
Widya Medika, 2002
Buku Teks
Appleton & Lang , 1996
Buku Teks
Voet, Donald J., author
John Wiley & Sons, 2008
Buku Teks
McGilvery, R.W.
WB. Saunders, 1972
Buku Teks
Ottaway, J. H.
English Language Book Society and Bailliere Tindall, 1984
Buku Teks