Jorgensen, Marianne, author
Sage, 2004
Buku Teks
edited by Linda Ellis
Garland Publishing, 1999
Buku Referensi
Finster, Felix, editor
[Springer, ], 2012
eBooks
Fredric M. Jablin, Linda L. Putnam
Sage Publications, 2001
Buku Teks
New York Garland 2000
Buku Referensi