Patton, Michael Quinn
Qualitative research and evaluation methods
SAGE, 2015
 Buku Teks
Patton, Michael Quinn
Qualitative evaluation and research methods
Sage, 1990
 Buku Teks SO
The SAGE encyclopedia of qualitative research methods
Sage Publications, 2008
 eBooks
The Sage handbook of qualitative research
editors, Norman K. Denzin, Yvonna S. Lincoln
Sage , 2018
 Buku Teks
Handbook of qualitative research
Norman K. Denzin, Yvonna S. Lincoln, editors
Sage Publications, 1994
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