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판 7개, 최신 판부터
Tandem Library, 1999, School & Library Binding, ISBN 9780808563433
HarperCollins, 1992, ISBN 9780064433150
Tandem Library, 1992, 양장(하드커버), ISBN 9780613964425
Perfection Learning Prebound, 1987, Unknown Binding, ISBN 9780812450125
HarperTrophy, 1986, ISBN 9780064431231
Macmillan Children's, 1985, ISBN 9780333371473
Crowell, 1977, ISBN 9780690012873
