Shaw, Ian
Qualitative research in social work
Sage, 2001
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Glazier, Jack D.
Qualitative research in information management
Libraries Unlimited, 1992
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Grbich, Carol
Qualitative research in health and introduction
Allen and Unwin, 1999
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Silverman, David
Doing qualitative research
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Lindlof, Thomas R.
Qualitative communication research methods
Sage, 1995
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