Norman, R.O.C., author
The English Language Book Society, 1978
Buku Teks
English, James, author
McGraw-Hill, 1956
Buku Teks
Norman, R.O.C., author
Chapman and Hall , 1978
Buku Teks
Smith, Janice G., author
McGraw-Hill, 2015
Buku Teks
by Royston M. Roberts ... [et al.]
Rinehart and Winston, 1969
Buku Teks