Panagiotis Kanellis ...[et al.]
Idea Group Publishing, 2006
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David Hakken, author
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Artikel Jurnal
Nicholas Tsagourias, Russell Buchan.d
Edward Elgar Pub. Ltd., 2015
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Murray, Janet Horowitz, author
The Free Press, 1997
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Burden, Ernest E., 1934-, author
McGraw-Hill, 2000
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