The Australian concise Oxford dictionary of current English
edited by George W. Turner
Melbourne, Oxford University Press, 1987
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The Pocket oxford-Duden German dictionary
Oxford : Oxford University Press, 1995,
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The oxford dictionary of current english
Oxford university press , 1992
 Buku Teks
The oxford dictionary of current english
edited by Della Thompson
Oxford University Press, 1996
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Hornby, Albert Sydney
Oxford student's dictionary of current English
Oxford University Press, 1984
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