Research design qualitative, quantitative and mixed methods approaches

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• Research design qualitative, quantitative and mixed methods approaches
  由: Creswell, John W.
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• RESEARCH DESIGN: QUALITATIVE , QUANTITATIVE AND MIXED METHODS APPROACEHS
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• Research Design: Qualitative And Quantitative Approaches
  由: Creswell John W
  出版: (1994)
• Research design: qualitative,quantitative and mixed method approaches
  由: Creswell,John W
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• Research design : Qualitative, quantitative, and mixed methods approaches /
  由: Creswell, John W.
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