Research design: qualitative, quantitative and mixed methods approaches/

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• Research design : Qualitative, quantitative, and mixed methods approaches /
  著者:: Creswell, John W.
  出版事項: (2011)
• Research design: qualitative,quantitative and mixed methods approaches/
  著者:: Creswell,John W.
  出版事項: (2011)
• Research design: qualitative, quantitative, and mixed methods approaches
  著者:: Creswell, John W
  出版事項: (2009)
• Research design: qualitative, quantitative and mixed methods approaches /
  著者:: Creswell, John W
  出版事項: (2009)
• Research design qualitative, quantitative and mixed methods approaches
  著者:: Creswell, John W.
  出版事項: (2009)