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판 14개, 최신 판부터
HarperCollins Publishers Limited, 2012, ISBN 9780007439713
HarperCollins Publishers, 2012, ISBN 9780062244536
Turtleback Books Distributed by Demco Media, 2004, 양장(하드커버), ISBN 9780606299022
Rebound by Sagebrush, 2003, 도서관 제본, ISBN 9780613684217
Greenwillow, 2003, 양장(하드커버), ISBN 9780066237411
HarperTrophy, 2003, ISBN 9780064473576
Collins, 2000, ISBN 9780001857353
Collins, 2000, 무선(페이퍼백), ISBN 9780006755210
Mammoth, 1992, ISBN 9780749712259
Random House Books for Young Readers, 1990, 무선(페이퍼백), ISBN 9780394843391
Greenwillow Books, 1988, ISBN 9780688080068
Swift Children's, 1988, ISBN 9780859978934
Puffin Books, 1977, ISBN 9780140309690
Macmillan, 1975, ISBN 9780333171417