Creswell, J. W. (2014). Research design: Qualitative, Quantitative, and mixed methods approaches (4ª edición.). SAGE.
芝加哥风格引文Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 4ª edición. Thousand Oaks, CA: SAGE, 2014.
MLA引文Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 4ª edición. SAGE, 2014.
警告：这些引文格式不一定是100％准确.