Punch, K. F. (2014). Introduction to social research: Quantitative and qualitative approaches (3rd ed.). Sage.
Chicago ZitierstilPunch, Keith F. Introduction to Social Research: Quantitative and Qualitative Approaches. 3rd ed. New Delhi: Sage, 2014.
MLA ZitierstilPunch, Keith F. Introduction to Social Research: Quantitative and Qualitative Approaches. 3rd ed. Sage, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.