Ralph H. Folsom, Michael Wallace Gordon, Michael P. Van Alstine, Michael D. Ramsey.
West Academic Publishing, 2015
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Akgul, Zeynep, author
Dissertation.com , 2008
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Schil, Stephen W., author
Cambridge University Press, 2013
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Schefer, Krista Nadakavukaren, author
Edward Elgar Publishing, 2016
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Michael Waibel
Wolters Kluwer, 2010
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