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판 9개, 최신 판부터
Longman, 2007, 무선(페이퍼백), ISBN 9780205574834
Pearson/Longman Publishers, 2005, ISBN 9780321146076
Longman Publishers, 2002, ISBN 9780321051073
Addison-Wesley, 1999, 무선(페이퍼백), ISBN 9780201654868
Addison Wesley Longman, 1998, ISBN 9780321012449
HarperCollins College, 1996, ISBN 9780673994950
HarperCollinsPublishers, 1992, ISBN 9780673460325
Little, Brown, 1987, ISBN 9780316564137
Little, Brown, 1983, ISBN 9780316564083