Creswell, J. W. (2014). Research design: Qualitative, quantitative, and mixed methods approaches (Fourth edition.). SAGE Publications.
Citace podle Chicago (17th ed.)Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. Fourth edition. Thousand Oaks: SAGE Publications, 2014.
Citace podle MLA (9th ed.)Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. Fourth edition. SAGE Publications, 2014.
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