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
Green, Judith, 1961-
Qualitative methods for health research
Sage, 2018
Buku Teks
The Sage handbook of qualitative research
edited by Norman K. Denzin, Yvonna S. Lincoln
Sage, 2011
Buku Referensi