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New York University Press,
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Naver
2
Heater, Derek
Edinburgh University Press,
2006,
Naver
3
민경배
Yonsei University Press,
2005,
Naver
6
Baugh, Albert C.
Pearson Education,
2002,
Naver
7
Emery, Michael C.
Prentice Hall,
1992,
Naver