Low, Ona
Proficiency in english course
Edward Arnold, 1986
 Buku Teks SO
Ewer, J.R.
A course in basic scientific English
Longman, 1969
 Buku Teks SO
Christhophersen, Paul
An english phonetics course
Longmans, Green, 1956
 Buku Teks SO
Swan, Michael
The Cambridge English course
Cambridge University Press, 1987
 Buku Teks
French, F. G.
The Oxford English course for Malaya
Oxford University Press, 1951
 Buku Teks SO