Punch, K. F. (2005). Introduction to social research: Quantitative and qualitative approaches (2nd ed.). Sage Publications Ltd.
芝加哥风格引文Punch, Keith F. Introduction to Social Research: Quantitative and Qualitative Approaches. 2nd ed. London: Sage Publications Ltd, 2005.
MLA引文Punch, Keith F. Introduction to Social Research: Quantitative and Qualitative Approaches. 2nd ed. Sage Publications Ltd, 2005.
警告：这些引文格式不一定是100％准确.