Corbett, Jim
English for international banking and finance
Cambridge University Press , 1990
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Potter, Simeon
Our language
Penguin Books, 1979
Buku Teks SO
Gerber, Philip L.
Lessons in language
Wadsworth , 1968
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Sambrook, G.A.
The English Language
Longmans Green & Co, 1947
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Teaching of english language in the commercial advertisement
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