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판 5개, 최신 판부터
Tandem Library, 2004, Unknown Binding, ISBN 9780613999731
Starscape, 2004, ISBN 9780765346186
Warner Books, 1983, ISBN 9780446310994
Popular Library, 1977, ISBN 9780445040892
Warner Books> C/o Little Br, 1977, ISBN 9780445093829