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판 8개, 최신 판부터
Wadsworth Publishing, 2008, 무선(페이퍼백), ISBN 9780495095644
Wadsworth Publishing, 2005, 무선(페이퍼백), ISBN 9780495032076
Thomson/Wadsworth, 2003, ISBN 9780534598686
Wadsworth Pub Co, 2002, 양장(하드커버), ISBN 9780534419295
Brooks/Cole Pub. Co., 1999, ISBN 9780534346911
Brooks/Cole Pub. Co., 1994, ISBN 9780534173944
Wadsworth Pub. Co., 1988, ISBN 9780534085087
Wadsworth Pub. Co., 1979, ISBN 9780534007003