Creswell, J. W. (2013). Qualitative inquiry & research design: Choosing among five approaches. Sage.
Chicago-viite (17. p.)Creswell, John W. Qualitative Inquiry & Research Design: Choosing Among Five Approaches. New Delhi: Sage, 2013.
MLA-viite (9. p.)Creswell, John W. Qualitative Inquiry & Research Design: Choosing Among Five Approaches. Sage, 2013.
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