Clive, Seale, Giampietro Gobo, Jaber F. Gubrium, David Silverman
Sage Publications, 2008
Buku Teks
Gorman, G.E., author
Facet Publishing, 2005
Buku Teks
Berg, Bruce L. (Bruce Lawrence), 1954-, author
Pearson, 2004
Buku Teks
edited by George Mckenzie, Jackie Powell, Robin Usher
The Falmer Press, 1997
Buku Teks
Casanova, Pablo Gonzalez
N.Y. Pergamon , 1981
Buku Teks