Punch, K. F. (2005). Introduction to social research: Quantitative and qualitative approaches (2nd ed.). SAGE Publications.
Citace podle Chicago (17th ed.)Punch, Keith F. Introduction to Social Research: Quantitative and Qualitative Approaches. 2nd ed. London: SAGE Publications, 2005.
Citace podle MLA (9th ed.)Punch, Keith F. Introduction to Social Research: Quantitative and Qualitative Approaches. 2nd ed. SAGE Publications, 2005.
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