Punch, K. F. (2005). Introduction to social research: Quantitative and qualitative approaches (2nd ed.). Sage Publications Ltd.
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Chicago-čujuhus (17. p.)
Punch, Keith F. Introduction to Social Research: Quantitative and Qualitative Approaches. 2nd ed. London: Sage Publications Ltd, 2005.
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MLA-čujuhus (9. p.)
Punch, Keith F. Introduction to Social Research: Quantitative and Qualitative Approaches. 2nd ed. Sage Publications Ltd, 2005.
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