Wallace, Catherine
Reading
1992
 Buku Teks
Wallace, Catherine
Reading
Oxford University Press, 1993
 Buku Teks SO
Stevick, Earl W.
Images and options in the language classroom
Cambridge Cambridge University Press 1991,
 Buku Teks
Ariff, Mohamed
Asean trade policy options
Asean Economic Research Unit, 1988
 Buku Teks
The Canadian economy : problems and options
edited by R.C. Bellan, W.H. Pope
McGraw-Hill, 1981
 Buku Teks