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판 5개, 최신 판부터
Pearson, 2011, ISBN 9780328489725
Scott Foresman, Pearson Education, 2011, ISBN 9780328522361
Pearson/Scott Foresman, 2009, ISBN 9780328272822
Pearson/Scott Foresman, 2009, ISBN 9780328272815
Pearson/Scott Foresman, 2009, ISBN 9780328272907