Creswell,John W. (2011). Research design: Qualitative, quantitative, and mixed methods approaches (3rd.). Sage.
芝加哥风格引文Creswell,John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 3rd. New Delhi: Sage, 2011.
MLA引文Creswell,John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 3rd. Sage, 2011.
警告：这些引文格式不一定是100％准确.