Freebody, Peter
Qualitative research in education : interaction and practice
SAGE Publications, 2003
 Buku Teks
Qualitative research practice Principles of risk management and insurance
Clive, Seale, Giampietro Gobo, Jaber F. Gubrium, David Silverman
Sage Publications, 2008
 Buku Teks
Marshall, Catherine
Designing qualitative research
Sage, 1999
 Buku Teks
Silverman, David
Doing qualitative research
 Buku Teks
Walle, Alf H.
Qualitative research in intelligence and marketing
Quorum Books, 2001
 Buku Teks