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판 7개, 최신 판부터
Wadsworth Publishing, 2004, 스프링 제본, ISBN 9780534638801
Thomson/Wadsworth, 2003, ISBN 9780155046313
Harcourt College Publishers, 2000, ISBN 9780155081376
Harcourt Brace, 1996, ISBN 9780155016149
Harcourt Brace Jovanovich, 1992, ISBN 9780155831735
Harcourt Brace Jovanovich, 1988, ISBN 9780155831773
Harcourt Brace Jovanovich, 1984, ISBN 9780155831759