David Silverman. (2011). Interpreting qualitative data: A guide to the principles of qualitative research (4th.). Sage.
Chicago-tyylinen lähdeviittausDavid Silverman. Interpreting Qualitative Data: A Guide to the Principles of Qualitative Research. 4th. London: Sage, 2011.
MLA-viiteDavid Silverman. Interpreting Qualitative Data: A Guide to the Principles of Qualitative Research. 4th. Sage, 2011.
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