Strauss, Anselm L., author
Sage, 1998
Buku Teks
Strauss, Anselm L., author
Sage, 1990.
Buku Teks
Glaser, Barney G., author
Aldine, 1967
Buku Teks
Locke, Karen, author
Sage Publications, 2001
Buku Teks
Bryant, Antony, author
Oxford University Press, 2017
eBooks