Green, Judith, 1961-
Qualitative methods for health research
Sage, 2018
 Buku Teks
Patton, Michael Quinn
Qualitative research and evaluation methods
SAGE, 2015
 Buku Teks
Shaw, Ian
Qualitative research in social work
Sage, 2001
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The Sage handbook of qualitative research
editors, Norman K. Denzin, Yvonna S. Lincoln
Sage , 2018
 Buku Teks
The Sage handbook of qualitative research
edited by Norman K. Denzin and Yvonna S. Lincoln
Sage , 2011
 Buku Teks SO