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판 7개, 최신 판부터
Turtleback Books Distributed by Demco Media, 2001, Unknown Binding, ISBN 9780606225915
Houghton Mifflin, 2001, ISBN 9780618128099
Houghton Mifflin, 2001, ISBN 9780618128075
Houghton Mifflin Co (Juv), 1959, School & Library Binding, ISBN 9780395199695
Houghton Mifflin (Juv), 1959, School & Library Binding, ISBN 9780395185919
Scholastic Inc., 1956, ISBN 9780590023771
Scholastic, 1951, 무선(페이퍼백), ISBN 9780590433280