Swan, Michael
The new Cambridge English course. Student 4, Upper-intermediate
Cambridge University Press, 1993
Buku Teks
English for economics
Buku Teks
Brown, E.H. Phelps
A Course in applied Economics
Sir Isaac Pitman & Sons, 1953
Buku Teks
French, F. G.
The Oxford English course for Malaya
Oxford University Press, 1951
Buku Teks
Swan, Michael
The Cambridge English course
Cambridge University Press, 1987
Buku Teks