edited by Elsa Ramsden
W.B. Saunders, 1999
Buku Teks
Radley, Alan
Thousand Oaks Sage , 1994
Buku Teks
volume editors, Jan Howard and Anselm Strauss
John Wiley & Sons, 1975
Buku Teks
Leathard, Audrey, author
Chapman & Hall, 1993
Buku Teks
Taylor, Shelley E., author
McGraw-Hill, 1995
Buku Teks