Silverman, David
Doing qualitative research : a practical handbook
Sage, 2000
 Buku Teks SO
Silverman, David
Doing qualitative research: a practical handbook
Sage, 2010
 Buku Teks SO
The SAGE encyclopedia of qualitative research methods
Sage, 2008
 eBooks
Cooper, Karyn
Qualitative research in the post-modern era: contexts of qualitative research
Springer, 2012
 eBooks
Largan, Claire
Qualitative secondary research : a step-by-step guide
Sage, 2019
 Buku Teks SO