Kirn, Elaine
McGraw-Hill, 1990
Buku Teks
Pavlik, Cheryl
[publisher not identified], [date of publication not identified]
Buku Teks
Allan, Dave
Oxford University Press, 1992
Buku Teks
Blair, Walter
Scott Foresman, 1955
Buku Teks
Foreword by Wong Lian Aik
Center for English Language Communication. NUS, 2001
Buku Teks