Neuman, W. L. (2011). Social research methods: Qualitative and quantitative approaches (7th ed., international ed.). Pearson.
Chicago-viite (17. p.)Neuman, William Lawrence. Social Research Methods: Qualitative and Quantitative Approaches. 7th ed., international ed. Boston, Mass: Pearson, 2011.
MLA-viite (9. p.)Neuman, William Lawrence. Social Research Methods: Qualitative and Quantitative Approaches. 7th ed., international ed. Pearson, 2011.
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