Griffin, Rodger W., author
McGraw-Hill, 1969
Buku Teks
Kice, John L., author
Macmillan, 1972
Buku Teks
Watson, H.B., author
Oxford University Press , 1949
Buku Teks
Norman, R.O.C., author
The English Language Book Society, 1978
Buku Teks
Fishel, Derry L., author
Macmillan, 1971
Buku Teks