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판 13개, 최신 판부터
Penguin Books, Limited, 2011, ISBN 9780141337081
Puffin, 2011, ISBN 9780141337425
Penguin Books, Limited, 2011, ISBN 9780141337418
Puffin, 2011, ISBN 9780141337104
Longman, 2001, 무선(페이퍼백), ISBN 9780582435421
Longman, 2001, 무선(페이퍼백), ISBN 9780582435438
Longman, 2001, 무선(페이퍼백), ISBN 9780582411579
Penguin UK, 1999, 보드북, ISBN 9780670871766
Penguin UK, 1999, 양장(하드커버), ISBN 9780670803446
Viking Children's Books, 1990, 양장(하드커버), ISBN 9780670832828
Puffin, 1983, ISBN 9780140503845
Viking Children's Books, 1981, Unknown Binding, ISBN 9780722657072
Puffin Books, 양장(하드커버), ISBN 9780140569445