Wilson, Kate, author
Bailliere Tindall, 1997
Buku Teks
Gallahue, David L., author
McGraw-Hill, 1998
Buku Teks
Wilson, Kate, author
Bailliere Tindal , 2005
Buku Teks
edited by Monica Lanyado and Ann Horne
Routledge, 2006
Buku Teks
Edited by: Mark A. Reinnecke, Frank M. Dattilio, Arthur Freeman
The Guilford Press, 2003
Buku Teks