Coe, Graham
Colloquial English
Routledge & Kegan Paul, 2005
 Multimedia
Fitikides, T.J.
Common Mistakes in English : with exercises / T.J. Fitikides
longmans, group limited, 1964
 Buku Teks
English in fact : students book / Michael Lucas
Heinemann Educational Books, 1981
 Buku Teks
Lucas, Michael
English in fact : teachers book / Michael Lucas
Heinemann Educational Books, 1981
 Buku Teks
Howard, Godfrey, author
The good English guide: English usage in the 1990
Pan Macmillan Publishers, 1993
 Buku Referensi
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