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판 7개, 최신 판부터
Kessinger Publishing, LLC, 2007, 양장(하드커버), ISBN 9780548128343
Kessinger Publishing, LLC, 2006, 무선(페이퍼백), ISBN 9781428638426
Stackpole Books, 2001, 무선(페이퍼백), ISBN 9781589760820
Mountain Press Pub. Co., 1988, ISBN 9780878422067
University of Nebraska Press, 1984, ISBN 9780803287099
Garland Pub., 1976, ISBN 9780824016722
Arno Press, 1973, ISBN 9780405049927