Qualitative research
edited by Alan Bryman, Robert G. Burgess
SAGE Publication, 1999
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Green, Judith, 1961-
Qualitative methods for health research
Sage, 2018
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Patton, Michael Quinn
Qualitative research and evaluation methods
SAGE, 2015
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Patton, Michael Quinn
Qualitative research and evaluation methods
SAGE Publication, 2002
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Shaw, Ian
Qualitative research in social work
Sage, 2001
 Buku Teks SO