Qualitative research
edited by Alan Bryman, Robert G. Burgess
SAGE Publication, 1999
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Holloway, Immy
Basic concept for qualitative research
Blackwell, 1997
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McLeod, John
Qualitative research in counselling and psychotherapy
Sage Publications, 2002
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Lindlof, Thomas R.
Qualitative communication research methods
Sage, 2002
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Shaw, Ian
Qualitative research in social work
Sage, 2001
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